Change the layout

Not sure if this is worth merging.  But I wanted to show you the layout I've been using to organize ember apps in project files.  I've put everything that we got from peepcode in a folder now called app instead of in the root.  I've also moved everything with tests into a top level folder called tests.  Underneath tests thare are three folders; support, integration, unit.  There you can have integration tests under its own folder, unit under its own folder.  And any shared js files such as mocha, jasmine, runner.js etc go into support.

There is a unit test and an integration test in there that both should be passing under testem and testacular.

We should pull in Bill's branches w/ all the jasmine and mocha html runners into tests/support and write our own html pages to run the tests and put the app in an iframe or find a way to attach it to a dom element other than body w/o modifying the app.js file.