anchor.diff:          object2.forEachAlive((item2) {
   
             if (item1.hitTestObject(item2)) {
  -            collisonHandler(item1, item2);
  +            collisionHandler(item1, item2);
             }
   
           });
  
positive.code: part of dartrocket.physics;
  
  /**
   * Physics class can solve collison between gameobject for now.
   * 
   * Example:
   *      //you can acces the physics object this way
   *      game.physics
   */
  
  
negative.code:       object2.forEachAlive((item) {
  
          if (item.hitTestObject(object1)) {
            collisionHandler(object1, item);
          }
  
        });
  