Fix ruby rake task signature

Author: gurdotan

lib/tasks/requirejs-rails_tasks.rake

@@ -11,7 +11,7 @@ require 'active_support/ordered_options'
 
 namespace :requirejs do
   # This method was backported from an earlier version of Sprockets.
-  def ruby_rake_task(task)
+  def ruby_rake_task(task, force = true)
     env = ENV["RAILS_ENV"] || "production"
     groups = ENV["RAILS_GROUPS"] || "assets"
     args = [$0, task, "RAILS_ENV=#{env}", "RAILS_GROUPS=#{groups}"]