code: function containsPoint(x, y) {
           return x >= this.left && x <= this.right && y >= this.top && y <= this.bottom;
         }
docs: check if this rectangle contains the specified point
  @name containsPoint
  @memberOf me.Rect.prototype
  @function
  @param  {Number} x x coordinate
  @param  {Number} y y coordinate
  @return {boolean} true if contains