Added TweenManager#removeFrom method

Allows the removal of all Tweens from a specific object, array of objects or group of objects.

Demo: http://jsfiddle.net/lewster32/L3u3gp5k/
Current code consistency would write all these loops similar to: `for (var i = 0, len = obj.length; i < len; i++)`. That is, implicit variable hoisting is used (and understood) in the code and the name of iteration variable is not changed based on iterated type in multiple code-paths when such unifies.