final commit lesson25
final commit lesson29
Final Changes
removed extra linear layout in TweetDetailActivity
Base commit for mod3-dev-challenge
* Integration of Retrofit and GSON libraries
* HTTP login call to retrieve and save auth token
* Loading animation during HTTP call
* Fetch tweets using /tweets GET call
* ComposeTweetActivity
* Submit new tweet using /tweets POST call
* Refresh to fetch latest tweets
[Dev-challenge only] 
* Replaced Retrofit with plain HttpClient (Android) implementation
* Restored AsyncFetchTweets.java for backward compatibility with older tests