Turn EmberHandlebarsPreprocessor into generic ES6TemplatePreprocessor
Turn EmberHandlebarsPreprocessor into generic ES6TemplatePreprocessor

osxi/broccoli,ixisystems/broccoli,ember-cli/broccoli,gabesoft/broccoli,broccolijs/broccoli,osxi/broccoli,broccolijs/broccoli,rwjblue/broccoli,broccolijs/broccoli,osxi/broccoli,ember-cli/broccoli,gabesoft/broccoli,ember-cli/broccoli,gabesoft/broccoli,broccolijs/broccoli,ixisystems/broccoli,jnicklas/broccoli