Travis CI: site documentation update at 2014-02-10 21:14:12 UTC.

Commit: https://github.com/urho3d/Urho3D/commit/6dd168db5ded4f941c62d8c37afcedc26edba98c

Message: Bullet rigidbody's inertia tensor does not depend on position, so no need to recalculate it if rigidbody position only is forced to a new value.