openlayers/ol3 — pull request #2027 by tonio (2014-04-30 10:44:16+00:00)
Title: Add a rotate control

Hidden when rotation is 0, it shows current rotation and reset it on click.

![capture decran 2014-04-30 a 12 14 26](https://cloud.githubusercontent.com/assets/21686/2840378/07ae85ba-d054-11e3-9f67-b1bf1e746ace.png)