Calculate distance and direction, ajax callbacks

Add ajax callback for success --
Calculate distance from user
If user is close to ISS, calculate cardinal direction from user and write message
setISS function

On success, set ISS options on user object
Wrap javascript in ISS object and Space Object object
Solve merge conflicts to push on master

Conflicts:
	src/js/pebble-js-app.js
Refactor some JS, add semi colons
Merge pull request #4 from hwhelchel/iss-direction

Calculate distance and direction, ajax callbacks