Tested full application : Seems to work fine.
Changes messages for points.
Changes leaderboard to make it behave like a thread. Can be stopped using sigints now
Unifies streamlistener and stream in one single HashtagLogger entity

This will allow to add and remove tags in a clean way
Implements add of hashtag while thread is running.

For some reason, if HashtagLogger.start() is called again, signal handling won´t work anymore
Implement remove hashtag method.

Can´t explain signal handling problem yet :s
Couldnt simplify and reproduce yet either
Starts working on command line utility to manage stream and counter.