Add Simple Lists Sample

Demonstrates retrieving token from AAD.
Demonstrates retrieving list items from SharePoint site.
Demonstrates use of OfficeFuture and RunOnUIThread.
OptionsMenu includes options to manage OAuth tokens.

![screenshot](https://f.cloud.github.com/assets/4421720/2399296/58d070fc-a9fd-11e3-9c1d-72285ba25f5e.PNG)