Upgrade to Twitter4j v 3.03 dependency for recent Twitter API v1.0 deprecation.

Since the Twitter API upgrade to v1.1 and the deprecation of v1.0, the Twitter4j dependency needs to be updated to 3.x .

Announcement here: http://blog.twitter4j.org/2013/06/12/33

And a list of deprecated operations here: http://twitter4j.org/en/versions.html#migration22x-30x

Changes include upgrade of Twitter4j dependency to 3.0.3, removal of deprecated methods detailed above and modified tests and docs to reflect the changes.