Update npm and bower dependencies
- ember-templates is compiling handlebars using compiler version 3
  which is incompatible with the version of handlebars being downloaded
  by bower. So, the app doesn't work on boot. Set handlebars/ember client
  side dependencies to rc4 until ember-templates is updated
Merge pull request #2 from AdamFerguson/master

Update handlebars dependencies so server compiler version matches client version