diff --git a/README.md b/README.md
index 01e35da..22267d5 100644
--- a/README.md
+++ b/README.md
@@ -25,14 +25,52 @@ gem "pagseguro-transparente", "~> 0.2.3"
 ~~~
 * Ainda não publicada, é preciso baixar direto do Github.
 
-Criar um initializer em config/initializer/pagseguro.rb
+###**PagSeguro** suporta dois métodos de configurações.
+
+####Rails Initializer
+~~~.ruby
+rails g pagseguro:install
+~~~
+
+O generator vai criar o Rails initializer em config/initializers/pagseguro.rb.
 ~~~.ruby
 PagSeguro.configure do |config|
-    config.email = "exemplo@pagseguro.com.br"
-    config.token = "token válido"
+  config.environment            = :sandbox
+  config.adapter_javascript_url = "https://stc.sandbox.pagseguro.uol.com.br/pagseguro/api/v2/checkout/pagseguro.directpayment.js"
+  config.email                  = "exemplo@pagseguro.com.br"
+  config.token                  = "token válido"
 end
 ~~~
 
+####Ou por YAML
+~~~.ruby
+rails g pagseguro:install --use-yml
+~~~
+
+O generator vai criar o YAML em config/pagseguro.yml.
+~~~.yaml
+development: &development
+  adapter_javascript_url: "https://stc.sandbox.pagseguro.uol.com.br/pagseguro/api/v2/checkout/pagseguro.directpayment.js"
+  email: "exemplo@pagseguro.com.br"
+  token: "token válido"
+  environment: "sandbox"
+
+test:
+  <<: *development
+
+production:
+  adapter_javascript_url: "https://stc.pagseguro.uol.com.br/pagseguro/api/v2/checkout/pagseguro.directpayment.js"
+  email: "exemplo@pagseguro.com.br"
+  token: "token válido"
+  environment: "production"
+~~~
+
+
+####Adicione ao seu application layout
+~~~
+<%= javascript_include_tag PagSeguro.adapter_javascript_url %>
+~~~
+
 ##Criando uma nova sessão
 ~~~.ruby
 pagseguro_session = PagSeguro::Session.new
diff --git a/lib/config.rb b/lib/config.rb
new file mode 100644
index 0000000..902cdb7
--- /dev/null
+++ b/lib/config.rb
@@ -0,0 +1,55 @@
+module PagSeguro
+  class Config
+    # Primary e-mail associated with the primary account.
+    attr_accessor :email
+
+    # The API token associated with primary account.
+    attr_accessor :token
+
+    # Sencondary e-mail associated with secondary account.
+    attr_accessor :alt_email
+
+    # The API token associated with secondary account.
+    attr_accessor :alt_token
+
+    # The PagSeguro environment.
+    # Only +production+ for now.
+    attr_accessor :environment
+
+    # Timeout value in seconds for requests.
+    attr_accessor :timeout
+
+    # Javascript adapter
+    attr_accessor :adapter_javascript_url
+
+    def initialize
+      load_yml! if defined?(Rails) && yml_exists?
+    end
+
+    def yml_exists?
+      defined?(Rails.root) ? File.exist?(self.yml_path) : false
+    end
+
+    def yml
+      begin
+        @yml ||= HashWithIndifferentAccess.new(YAML.load_file(yml_path)[Rails.env]) rescue nil || {}
+      rescue Psych::SyntaxError
+        @yml = {}
+      end
+    end
+
+    def yml_path
+      Rails.root.join("config/pagseguro.yml")
+    end
+
+    def load_yml!
+      self.email                  = yml[:email]
+      self.token                  = yml[:token]
+      self.alt_email              = yml[:alt_email]
+      self.alt_token              = yml[:alt_token]
+      self.timeout                = yml[:timeout]
+      self.adapter_javascript_url = yml[:adapter_javascript_url]
+      self.environment            = yml[:environment].to_sym
+    end
+  end
+end
diff --git a/lib/generators/pagseguro/install_generator.rb b/lib/generators/pagseguro/install_generator.rb
new file mode 100644
index 0000000..1520f36
--- /dev/null
+++ b/lib/generators/pagseguro/install_generator.rb
@@ -0,0 +1,22 @@
+module PagSeguro
+  module Generators
+    class InstallGenerator < Rails::Generators::Base
+      namespace "pagseguro:install"
+      source_root File.expand_path("../../templates", __FILE__)
+
+      class_option :use_yml, type: :boolean, default: false, desc: "Use YML file instead of Rails Initializer"
+
+      def generate_config
+        if options[:use_yml]
+          template "pagseguro.yml", "config/pagseguro.yml"
+        end
+      end
+
+      def generate_initializer
+        unless options[:use_yml]
+          template "pagseguro.rb", "config/initializers/pagseguro.rb"
+        end
+      end
+    end
+  end
+end
diff --git a/lib/generators/templates/pagseguro.rb b/lib/generators/templates/pagseguro.rb
new file mode 100644
index 0000000..21fef7c
--- /dev/null
+++ b/lib/generators/templates/pagseguro.rb
@@ -0,0 +1,6 @@
+PagSeguro.configure do |config|
+  config.environment            = :sandbox
+  config.adapter_javascript_url = "https://stc.sandbox.pagseguro.uol.com.br/pagseguro/api/v2/checkout/pagseguro.directpayment.js"
+  config.email                  = "exemplo@pagseguro.com.br"
+  config.token                  = "token válido"
+end
diff --git a/lib/generators/templates/pagseguro.yml b/lib/generators/templates/pagseguro.yml
new file mode 100644
index 0000000..d1a061a
--- /dev/null
+++ b/lib/generators/templates/pagseguro.yml
@@ -0,0 +1,14 @@
+development: &development
+  adapter_javascript_url: "https://stc.sandbox.pagseguro.uol.com.br/pagseguro/api/v2/checkout/pagseguro.directpayment.js"
+  email: "exemplo@pagseguro.com.br"
+  token: "token válido"
+  environment: "sandbox"
+
+test:
+  <<: *development
+
+production:
+  adapter_javascript_url: "https://stc.pagseguro.uol.com.br/pagseguro/api/v2/checkout/pagseguro.directpayment.js"
+  email: "exemplo@pagseguro.com.br"
+  token: "token válido"
+  environment: "production"
diff --git a/lib/pagseguro.rb b/lib/pagseguro.rb
index de4ac98..b24ebbb 100644
--- a/lib/pagseguro.rb
+++ b/lib/pagseguro.rb
@@ -1,4 +1,5 @@
 require "active_model"
+require "config"
 require "pagseguro/version"
 require "pagseguro/request"
 require "pagseguro/session"
@@ -34,27 +35,24 @@
 
 module PagSeguro
   class << self
-    # Primary e-mail associated with the primary account.
-    attr_accessor :email
-
-    # The API token associated with primary account.
-    attr_accessor :token
-
-    # Sencondary e-mail associated with secondary account.
-    attr_accessor :alt_email
+    def config=(data)
+      @config = data
+    end
 
-    # The API token associated with secondary account.
-    attr_accessor :alt_token
+    def config
+      @config ||= Config.new
+    end
 
-    # The PagSeguro environment.
-    # Only +production+ for now.
-    attr_accessor :environment
+    def configure(&block)
+      yield config
+    end
 
-    # Timeout value in seconds for requests.
-    attr_accessor :timeout
+    def adapter_javascript_url
+      config.adapter_javascript_url
+    end
 
     def api_url(version)
-      uris.fetch(environment) + version
+      uris.fetch(config.environment) + version
     end
 
     private
@@ -66,7 +64,7 @@ def uris
     end
   end
 
-  self.environment = :production
+  self.config.environment = :production
 
   # Set the global configuration.
   #
@@ -75,8 +73,4 @@ def uris
   #     config.token = "abc"
   #     config.environment = :sandbox
   #   end
-  #
-  def self.configure(&block)
-    yield self
-  end
 end
diff --git a/lib/pagseguro/request.rb b/lib/pagseguro/request.rb
index c2bc0e1..5b8881c 100644
--- a/lib/pagseguro/request.rb
+++ b/lib/pagseguro/request.rb
@@ -16,16 +16,16 @@ def post(path, version, account = "default", params = {})
       self.class.base_uri PagSeguro.api_url(version)
       options = { body: add_credencials(account) }
       options[:body].merge!(params)
-      options[:timeout] = PagSeguro.timeout unless PagSeguro.timeout.blank?
+      options[:timeout] = PagSeguro.config.timeout unless PagSeguro.config.timeout.blank?
       self.class.post(path, options)
     end
 
     private
     def add_credencials(account)
       if account == "alternative"
-         { email: PagSeguro.alt_email, token: PagSeguro.alt_token }
+         { email: PagSeguro.config.alt_email, token: PagSeguro.config.alt_token }
       else
-         { email: PagSeguro.email, token: PagSeguro.token }
+         { email: PagSeguro.config.email, token: PagSeguro.config.token }
       end
     end
   end
diff --git a/spec/pagseguro/notification_spec.rb b/spec/pagseguro/notification_spec.rb
index 76cf26f..d673620 100644
--- a/spec/pagseguro/notification_spec.rb
+++ b/spec/pagseguro/notification_spec.rb
@@ -10,10 +10,10 @@
   it { should respond_to(:transaction) }
 
   before do
-    PagSeguro.email = 'mail'
-    PagSeguro.token = 'token'
-    PagSeguro.alt_email = 'alt_mail'
-    PagSeguro.alt_token = 'alt_token'
+    PagSeguro.config.email = 'mail'
+    PagSeguro.config.token = 'token'
+    PagSeguro.config.alt_email = 'alt_mail'
+    PagSeguro.config.alt_token = 'alt_token'
   end
 
   describe "#transaction" do
diff --git a/spec/pagseguro/pagseguro_spec.rb b/spec/pagseguro/pagseguro_spec.rb
index 8688d01..720d392 100644
--- a/spec/pagseguro/pagseguro_spec.rb
+++ b/spec/pagseguro/pagseguro_spec.rb
@@ -2,14 +2,14 @@
 
 describe PagSeguro do
   before do
-    PagSeguro.email = "EMAIL"
-    PagSeguro.token = "TOKEN"
-    PagSeguro.timeout = 10
+    PagSeguro.config.email = "EMAIL"
+    PagSeguro.config.token = "TOKEN"
+    PagSeguro.config.timeout = 10
   end
 
-  it { expect(PagSeguro.email).to eql("EMAIL") }
-  it { expect(PagSeguro.token).to eql("TOKEN") }
-  it { expect(PagSeguro.timeout).to eql(10) }
+  it { expect(PagSeguro.config.email).to eql("EMAIL") }
+  it { expect(PagSeguro.config.token).to eql("TOKEN") }
+  it { expect(PagSeguro.config.timeout).to eql(10) }
 
   context "configuring library" do
     it "yields PagSeguro" do
@@ -20,7 +20,7 @@
   end
 
   context "default settings" do
-    it { expect(PagSeguro.environment).to eql(:production) }
+    it { expect(PagSeguro.config.environment).to eql(:production) }
   end
 
   describe ".api_url" do
@@ -30,7 +30,7 @@
       end
 
       context "sandbox" do
-        before { PagSeguro.environment = :sandbox }
+        before { PagSeguro.config.environment = :sandbox }
         it { expect(PagSeguro.api_url(PagSeguro::Request::API_V2)).to eq('https://ws.sandbox.pagseguro.uol.com.br/v2') }
       end
     end
@@ -41,7 +41,7 @@
       end
 
       context "sandbox" do
-        before { PagSeguro.environment = :sandbox }
+        before { PagSeguro.config.environment = :sandbox }
         it { expect(PagSeguro.api_url(PagSeguro::Request::API_V3)).to eq('https://ws.sandbox.pagseguro.uol.com.br/v3') }
       end
     end
diff --git a/spec/pagseguro/payment/serializer_spec.rb b/spec/pagseguro/payment/serializer_spec.rb
index f0087f1..d658d52 100644
--- a/spec/pagseguro/payment/serializer_spec.rb
+++ b/spec/pagseguro/payment/serializer_spec.rb
@@ -75,8 +75,8 @@
   end
 
   before do
-    PagSeguro.email = 'pagseguro@eventick.com.br'
-    PagSeguro.token = 'my_token'
+    PagSeguro.config.email = 'pagseguro@eventick.com.br'
+    PagSeguro.config.token = 'my_token'
   end
 
   let(:bank) { PagSeguro::Bank.new('bancodobrasil') }
diff --git a/spec/pagseguro/query_spec.rb b/spec/pagseguro/query_spec.rb
index 4c0e356..dbbbfe5 100644
--- a/spec/pagseguro/query_spec.rb
+++ b/spec/pagseguro/query_spec.rb
@@ -9,10 +9,10 @@
   it { should respond_to(:transaction) }
 
   before do
-    PagSeguro.email = 'mail'
-    PagSeguro.token = 'token'
-    PagSeguro.alt_email = 'alt_mail'
-    PagSeguro.alt_token = 'alt_token'
+    PagSeguro.config.email = 'mail'
+    PagSeguro.config.token = 'token'
+    PagSeguro.config.alt_email = 'alt_mail'
+    PagSeguro.config.alt_token = 'alt_token'
   end
 
   describe "#transaction" do
diff --git a/spec/pagseguro/refund_spec.rb b/spec/pagseguro/refund_spec.rb
index 0cdb80d..3a894d8 100644
--- a/spec/pagseguro/refund_spec.rb
+++ b/spec/pagseguro/refund_spec.rb
@@ -9,10 +9,10 @@
   it { should respond_to(:errors) }
 
   before do
-    PagSeguro.email = 'mail'
-    PagSeguro.token = 'token'
-    PagSeguro.alt_email = 'alt_mail'
-    PagSeguro.alt_token = 'alt_token'
+    PagSeguro.config.email = 'mail'
+    PagSeguro.config.token = 'token'
+    PagSeguro.config.alt_email = 'alt_mail'
+    PagSeguro.config.alt_token = 'alt_token'
   end
 
   describe "#request" do
diff --git a/spec/pagseguro/session_spec.rb b/spec/pagseguro/session_spec.rb
index aed40ea..a73e715 100644
--- a/spec/pagseguro/session_spec.rb
+++ b/spec/pagseguro/session_spec.rb
@@ -5,8 +5,8 @@
   subject { session }
 
   before do
-    PagSeguro.email = 'mail'
-    PagSeguro.token = 'token'
+    PagSeguro.config.email = 'mail'
+    PagSeguro.config.token = 'token'
   end
 
   it { should respond_to(:create) }