Add branch option to Gemfile to be able to use bundle local

Author: carlosantoniodasilva

Gemfile

@@ -2,6 +2,6 @@ source :rubygems
 gemspec
 
 # Roll w/ master until 4.0 is cut
-gem 'actionpack', :github => 'rails/rails'
-gem 'journey', :github => 'rails/journey'
-gem 'railties', :github => 'rails/rails'
+gem 'actionpack', :github => 'rails/rails', branch: 'master'
+gem 'journey', :github => 'rails/journey', branch: 'master'
+gem 'railties', :github => 'rails/rails', branch: 'master'

lib/sprockets/rails/helper.rb

@@ -1,6 +1,5 @@
 require 'action_view'
 require 'sprockets'
-
 require 'active_support/core_ext/class/attribute'
 
 module Sprockets