Travis CI: site documentation update at 2014-04-17 22:22:10 UTC.

Commit: https://github.com/urho3d/Urho3D/commit/0c219cfb35f7ad9fb8feac1a2e4a70faec8ed4d4

Message: Document the AutoloadPaths engine startup parameter. Copy also the Extra directory in the Android CopyData batch file.