Twit 01 android dev tweets

Performs OAuth using the "signpost" library. Retrieves a number of #AndroidDev Tweets from twitter and displays in a custom list. All REST api requests are done via AsyncTask and apache http client.
always have your layout fields and separate lines (this is a novoda style). Auto format should pick this up! if not import [these settings](https://github.com/novoda/base/tree/master/ide/intellij)