Merge pull request #1 from akhillohchab/master

Added keyword extraction
committing to merge
Merge branch 'master' of https://github.com/Kevinwalters/TwittMap
Added Tweet object, support for scrubbing geo
Merge pull request #2 from akhillohchab/master

pull after support for geo added
Merge pull request #1 from Kevinwalters/master

pull after support for geo added