Browser version
Merge branch 'master' of github.com:xixixao/meta-coffee

Conflicts:
	Makefile

Preserved Makefile, for browser version generation and to keep make.
Added grunt-cli so that grunt doesn't have to be installed globally.
Reverted grunt-contrib-coffee version to 0.4.0, to use CoffeeScript
1.4.0, because 1.6 has not been tested yet with MetaCoffee.