Added the ISS current location to the map

ISS is added to the map and the location is updated every 5 seconds.
Final Touches

Changed start extent and zoom in to accomidate the different devices better.  Updated the README to point to the esri.github.io location.  Added the hide swipe control to increase screen real estate especially on the iPhones.
Added Info Page

Decided it was a good idea to add an info page so users knew what was going on.
Merge pull request #13 from billyz313/master

Pull Request for the final touches