Travis CI: site documentation update at 2014-02-14 23:07:59 UTC.

Commit: https://github.com/urho3d/Urho3D/commit/4c02e19352fa8ec6f242a7402ac806175abb1a6e

Message: Increased the OpenGL ES constant depth bias adjustment to reduce self-shadowing artifacts. Do not use cascaded shadow mapping on OpenGL ES, so that the low quality shadow mode can avoid dependent texture reads altogether for much higher performance on iOS. Updated documentation of the GetPlatform() function.