Added package.json
Added Grunt
Updated Grunt for JS concat
Added uglify to Grunt
Updated Grunt with watch
Added the array extensions class
Added QUnit to Grunt + testing parameters in 'all' extension method
Updated 'all' method and unit tests with real implementation
Added 'any' implementation
Refactoring + add implementation of average
Added implementation and tests for 'count'
Added 'distinct' implementation and unit tests