Cleaner Gruntfile, Added JSDoc, Building standalone vanilla lib (without deps) and many more ..

First of all, let me mention, that output of refactored grunt remains the same as original. 

Intermediate build files are .gitgnored.

Using few more grunt tasks 
* grunt-contrib-clean
* grunt-ember-templates
* grunt-browserify2
* grunt-jsdoc

New grunt tasks configured
* JSDoc engaged  and part of pipeline
* JSHint engaged and part of pipeline
* QUnit engaged and part of pipeline

Last but not least, Grunt was rewritten from coffee to js.

Next steps eliminate remaining ad-hoc compiled templates and use only handlerbars-runtime