Rotate typo in Codepen example

[philipbulley]

The RecognizeWith with Pinch and Rotate pen linked to from http://hammerjs.github.io/examples/ has a typo.

This

var rotate = new Hammer.Rotation();

should be

var rotate = new Hammer.Rotate();

[mikemonteith]

Typo can be fixed in recognize-with.md file (http://hammerjs.github.io/recognize-with/)

Only the owner of the jtangelder user on codepen.io user can fix the broken codepen example.