Demo Project Update

[Sam-Spencer]

I've updated the demo project to make it a little cleaner and easier to understand. Here's what this pull request changes:

• Changed code to support storyboard initialization
  • Move away from XIBs
• Clean-up some project settings, images (moved everything to XCAssets), and code
• Updated Readme by adding more information, descriptive, text, etc.

This is just a little update. You may like it... or not. Great project by the way - I will be using it in the next update of my app: Runr (http://AppStore.com/Runr). Let me know what you think.

[davdroman]

What a great contribution! Thank you! I'm totally merging it.