remove the deprecated module "gulp-ember-handlebars", using "gulp-handlebars" instead
adding the missing module "ember-handlebars", and update the typo of the filepath inside buildhbs task
update the readme content for replacing gulp-handlebars
Merge branch 'feature/handlebar'

* feature/handlebar:
  update the readme content for replacing gulp-handlebars
  adding the missing module "ember-handlebars", and update the typo of the filepath inside buildhbs task
  remove the deprecated module "gulp-ember-handlebars", using "gulp-handlebars" instead
bump up the version of ember, ember-data, and ember-resolver on the client side
update the readme for updating bower ember, ember-data, and resolver version
fix the bug of sass sourcemap support in the browser dev tool
fix the bug of removing livereload script in production environment
bump up the version of gulp-ruby-sass for sourcemap fix
fix the build step to strip out livereload script
bump up the gulp-changed to 1.0.0 and fix the imagemin task cache issue