Enhance assets:clobber with javascript:clobber (#53)

#52 (comment)

Author: Intrepidd

lib/tasks/jsbundling/clobber.rake

@@ -4,3 +4,5 @@ namespace :javascript do
     rm_rf Dir["app/assets/builds/[^.]*.js"], verbose: false
   end
 end
+
+Rake::Task["assets:clobber"].enhance(["javascript:clobber"])