Update to conform with FB code style

Summary: This updates rebound to (almost) conform with our FB internal linter. The other issues ('setImmediate' is not defined etc.) don't make sense to be fixed in the open source version.

Test Plan: Opened examples/index.html locally and ensured all the demos still work
Does the linter complain if you use the word Facebook? Seems like sort of important context in this particular context given that just "Home" is not always associated with the Facebook Android skin.