Added Sinatra Skeleton to project

We now hava a blank Sinatra Skeleton app.
Added ability to tweet to app.

Added a tweet view.  Added authetnication so that I can use my app to tweet from my account.
Added submit handler to application .js

Added jquery submit handler in application.js. This is so that I can handle the tweet submission and page redirect 'asynchronously.'

Todo: create an analogy for asynchronous and ajax.  Ajax is like...
Added asynchronous javascript.

Added an ajax call so that the page can update withoug waiting for the server to respond. The page now has a 'waiting' section while it is waiting for a response, and success when the tweet has been successfully posted.