Updated the build process.
Updated the build process.

The build now tests for newer Python 3.x versions and PyPy.
Also the build will now test itself against Django 1.7RC1 instead of the latest beta version.
brack3t/Djrill,barseghyanartur/Djrill,janusnic/Djrill,idlweb/Djrill,idlweb/Djrill,barseghyanartur/Djrill,janusnic/Djrill