Embed shepherd page updates

Hey @MaxPower15, just tuned up the embed shepherd page.

I rearranged the sections to guide people to the bind and onFind methods straightaway since I think that's really the reason people will use it.

I also removed the part about .each and think we should consider removing it from the code. It's easy enough to for loop over that shit. Plus there's coffeescript and underscore to help people out who are used to that. Less is more :smile: 

If you think this looks good, just merge it with the button in git, that should trigger an auto-update! Yahoo!!!

Also, hey @jeffvincent ... look at me doing a pull request on the doc!