Gh pages audit

This audit covers the overview and usage section for each component. The examples sections will come next (there are plans for gist driven examples with jsfiddle type tinker-boxes). Lots of work to be done yet here, but, I think this is a good stopping point for the "first pass".
Note necessarily a comment on the this documentation, but most of our code samples for events should be updated so show the arguments passed into the callback function.  Some don't include these, and some list them incorrectly.  I believe most (if not all) pass the event as the first argument, and the element as the second.