Merge tag 'v1.2.2'

[maven-release-plugin]  copy for tag v1.2.2
added support for rotating an image by a given number of degrees

setRotationBy(-90) for example, will rotate from the current rotation
-90 degrees, whereas the old method setRotation(-90) would set the
rotation from 0. This is still its the behavior.
deprecated setPhotoViewRotation and added new method setPhotoViewRotationTo
changed names of rotation methods to fit better with the naming convention
Merge pull request #153 from phil-brown/master

Improved Photo Rotation API