Commited initial twitter capture code.
Changed database specs to mediacloud database;
Removed capture rate function
refactored Geoloc and improved algorithm
started some tests for geolocation of tweets
minor refactoring
minor refactoring
fixed some bugs and added parameters as default.
fixed some bugs and added parameters as default
Merge branch 'master' into feature/twitter_capture

Conflicts:
	requirements.txt
	tests/test_capture.py
refactored to use tweepy instead of twitter package
Merge branch 'feature/twitter_capture' of github.com:NAMD/mediacloud_backend into feature/twitter_capture

Conflicts:
	capture/twitter/GeoLoc.py
	capture/twitter/TwitterStream.py
refactored to use tweepy instead of twitter package
minor fix
expanded keywords to track,
and fixed minir bugs in the twitter capture
replaced try/except clause by if/elif
fixed process_tweet function
Merge pull request #52 from NAMD/feature/twitter_capture

Feature/twitter capture merged after fixing the issues raised.