Unity Continuous Integration

Get build automation integrated so that we can easly update art and web builds. We could also use this to automatically run the image compression from this task.

Some people seem to like https://jenkins-ci.org for Unity projects. See this SOF for a good starting point: http://answers.unity3d.com/questions/47183/continuous-integration-with-unity.html

Also this will be needed: http://docs.unity3d.com/Manual/CommandLineArguments.html