Change back to official sprockets-rails

Gemfile

@@ -20,7 +20,7 @@ gem 'activerecord-deprecated_finders', github: 'rails/activerecord-deprecated_fi
 # it being automatically loaded by sprockets
 gem 'uglifier', require: false
 
-gem 'sprockets-rails', github: 'josh/sprockets-rails', branch: 'master'
+gem 'sprockets-rails', github: 'rails/sprockets-rails', branch: 'master'
 
 group :doc do
   # The current sdoc cannot generate GitHub links due

railties/lib/rails/generators/app_base.rb

@@ -195,7 +195,7 @@ def assets_gemfile_entry
             # Gems used only for assets and not required
             # in production environments by default.
             group :assets do
-              gem 'sprockets-rails', github: 'josh/sprockets-rails'
+              gem 'sprockets-rails', github: 'rails/sprockets-rails'
               gem 'sass-rails',   github: 'rails/sass-rails'
               gem 'coffee-rails', github: 'rails/coffee-rails'
 
@@ -209,7 +209,7 @@ def assets_gemfile_entry
             # Gems used only for assets and not required
             # in production environments by default.
             group :assets do
-              gem 'sprockets-rails', github: 'josh/sprockets-rails'
+              gem 'sprockets-rails', github: 'rails/sprockets-rails'
               gem 'sass-rails',   '~> 4.0.0.beta'
               gem 'coffee-rails', '~> 4.0.0.beta'