Added package.json with dependencies
Added an MIT License
Added a Gruntfile.js
Fixed linting: semicolon
Added documentation to common.js
Added Doc for makeInherit, mergeObj and navigateObj
Added docs for forEach
Changed docs for cleanArray
cleanArray's from argument is no longer optional
Allows to clean an array from undefined elements
Optimized _inherit
Fixed error in mergeObjectsRecursively
Added watch task in grunt