Merge pull request #1 from ettoredn/master

Pullo
added the language guessing library (works fine)
Added a reader for the database at the time it print only the content of the tweets
Merge pull request #3 from ettoredn/master

Merge
Merge remote-tracking branch 'origin/master' into head

Conflicts:
	twitterstream.py
Merge pull request #4 from DX89B/head

Head
Added guess language.

@Ettore ricorda di installare la lib