Famous/famous — pull request #448 by dai-shi (2014-11-05 13:13:58+00:00)
Title: fix: PhysicsEngine.removeBody raising an error

As I noted in #173, there is still a problem. This tiny fix solves it.
The test code is at: https://gist.github.com/dai-shi/07a4ffb621fbc9ce6619