Merge pull request #1 from ndrsn/master

Changed `extend` to `extends` in collections/view.coffee + minor changes
instead of copying all files, use this.directory()
updated README to test ssh key on github
added grunt deps
added new Gruntfile
changed tasks to aliases (c=compile, b=build, etc) + added groc
Cleaned up Gruntfile a bit
Merge branch 'master' of https://github.com/ndrsn/generator-backbone-amd