step changed to scene for scenario files. All are steps so step is used internally change made to avoid internal confusion. framed runner. pass fail count in renderer. updates to readme. Renderer now starts with onStart method so listeners can be placed for frames.

options.rootElement provided to allow directing of selections for unit tests and framed tests.
options.window also added so scripts can be executed inside of the targeted window for frames.
options.frame added to control the css of the frame for positioning and sizing.