Phaser.rectangle.containsRect is backwards

[beeglebug]

Phaser.Rectangle.prototype.containsRect calls Phaser.Rectangle.containsRect, and passes in this as the first argument.

Phaser.Rectangle.containsRect tests if the first rect (a) is inside the second rect (b).

This means that rect1.containsRect(rect2) is actually testing if rect2 contains rect1, which is counter intuitive.

[photonstorm]

Agreed - fix merged.