rename handlebars helper to travis_handlebars

AssetFile

@@ -11,7 +11,7 @@ assets.update_version
 output 'public/scripts'
 input assets.scripts do
   match '**/*.hbs' do
-    handlebars :precompile => assets.production?
+    travis_handlebars :precompile => assets.production?
     concat 'templates.js'
   end
 

lib/travis/assets/helpers.rb

@@ -3,7 +3,7 @@ require 'rake-pipeline/dsl'
 module Travis
   class Assets
     module Helpers
-      def handlebars(*args, &block)
+      def travis_handlebars(*args, &block)
         filter(Filters::Handlebars, *args, &block)
       end