populated examples folder,
removed testing module,
adapted user's guide



git-svn-id: http://gapt.googlecode.com/svn/trunk/source@1609 85d21ef8-add0-11de-ae77-5bfb9c5a3f34
removed remaining references to at.logic.testing

git-svn-id: http://gapt.googlecode.com/svn/trunk/source@1610 85d21ef8-add0-11de-ae77-5bfb9c5a3f34