Allow the gem to be installed in Rails 5

Author: csexton

kracken.gemspec

@@ -15,12 +15,12 @@ Gem::Specification.new do |s|
 
   s.files = Dir['{app,config,db,lib}/**/*', 'MIT-LICENSE', 'Rakefile', 'README.md']
 
-  s.add_dependency 'rails', '~> 4.0'
+  s.add_dependency 'rails', '~> 5.0'
   s.add_dependency 'omniauth', '~> 1.0'
   s.add_dependency 'faraday', '~> 0.8'
   s.add_dependency 'omniauth-oauth2', '~> 1.1'
 
-  s.add_development_dependency 'rspec-rails', '~> 3.4'
+  s.add_development_dependency 'rspec-rails', '~> 3.5'
   s.add_development_dependency 'pry'
   s.add_development_dependency 'pry-nav'
   s.add_development_dependency 'webmock'