Fixes for Traffic Light positioning and Delegates.

Under certain circumstances, the traffic lights were not positioned
correctly during resizing. This should be fixed now.

The window delegate proxy handling has been rewritten, and it should
work properly now.

The header docs have been updated slightly.
README update.
Revert "Fixed NSProxy implementation to avoid exceptions in real world applications."

This reverts commit 8ac28c5b25789afd139a75067f30c212f003d247.