create sinatra example

Author: codebender

exmaple/Gemfile

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+source 'https://rubygems.org'
+
+gem 'sinatra'
+gem 'omniauth-fitbit-oauth2', :path => '../'

exmaple/config.ru

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+require 'bundler/setup'
+require 'sinatra/base'
+require 'omniauth-fitbit-oauth2'
+
+class App < Sinatra::Base
+  get '/' do
+    redirect '/auth/fitbit_oauth2'
+  end
+
+  get '/auth/:provider/callback' do
+    content_type 'application/json'
+    MultiJson.encode(request.env)
+  end
+
+  get '/auth/failure' do
+    content_type 'application/json'
+    MultiJson.encode(request.env)
+  end
+end
+
+use Rack::Session::Cookie
+
+use OmniAuth::Builder do
+  provider :fitbit_oauth2, ENV['FITBIT_CLIENT_ID'], ENV['FITBIT_CLIENT_SECRET'],
+    :scope => 'activity sleep'
+end
+
+run App.new