Travis CI: site documentation update at 2014-04-16 09:44:45 UTC.

Commit: https://github.com/urho3d/Urho3D/commit/79cdbabb5516d57ef637afe2d432f2ac8419776f

Message: Add abilility to use key mapping also for hats on screen joystick.
This should make it possible to bind the hats to something like "UP DOWN LEFT RIGHT".
This commit breaks earlier commits slightly. The default hats binding is now "WSAD" instead of "WASD".