Travis CI: site documentation update at 2014-04-11 02:04:06 UTC.

Commit: https://github.com/urho3d/Urho3D/commit/2c18a1ca659a7e9c07dcdf469e2fca67e82ded26

Message: Add AttributeAnimationInfo class, add more comment for animation class, use XMLElement::SetVariant/GetVariant save attribute animation frame value.