Travis CI: site documentation update at 2014-02-11 20:02:25 UTC.

Commit: https://github.com/urho3d/Urho3D/commit/fd140ddb32168f4bc01a28bb1e24dcf612a25772

Message: Minor code reorganization of the HelloGUI example. Removed SubscribeToEvents() as it was only used for 1 event and events were also subscribed to elsewhere.