update client side library to Ember#1.9.0 and Handlebars#2.0.0
amd loading handlebars module in the hacky fashion
fix the deprecation message of Ember warninng
Merge branch 'feature/ember1.9'

* feature/ember1.9:
  fix the deprecation message of Ember warninng
  amd loading handlebars module in the hacky fashion
  update client side library to Ember#1.9.0 and Handlebars#2.0.0
bump up version to v0.4.0