find/replace the generator differences

- does not actually change the application
  that will be output, just changes the generator
  task naming to make tests pass with new
  handlebones yoeman task
rename thorax -> handlebones throughout generated app
generic name for Generator class name to allow sharing generator setup between thorax and handlebones
remove registerViewHelper and specs for coffee, js and require statement for test-setup-browser
working generator for handlebones
Merge pull request #1 from FormidableLabs/thorax-to-handlebones

Thorax to handlebones