Travis CI: site documentation update at 2014-03-10 22:39:41 UTC.

Commit: https://github.com/urho3d/Urho3D/commit/2082c026c2727d4acb696cf794e822560335a2f6

Message: Handle zone search better to avoid erroneous lower-priority zone assignment. Added OnRemoveFromOctree() virtual function to Drawable. Zone code simplified. Remove zone reference from drawables within its bounding box when the zone is being destroyed.