Travis CI: site documentation update at 2014-04-15 15:24:00 UTC.

Commit: https://github.com/urho3d/Urho3D/commit/c78f34d5cafe99b29789c4995e83070a01c75e66

Message: Improve the hats response on screen joystick (in joystick event mode).
Refactor Samples base class to take advantage of the screen joystick.
Add second screen joystick layout for changing app settings.
Closes #264.