Merge pull request #1 from berty38/master

Merging changes from @berty38
Added code to average weighted geographic coordinates.
Added code to calculate precision and recall for predicted keywords.
Minor fixes.
Renamed geocode_analysis.py
Added code to analyze results from geolocation prediction.
Added geopy library to calculate distance between points.
Minor spelling error.
Fixed issue with overwriting output files.
Added follower graph parsing.
Switched predicate_writer.py to use int user ids.
Added psl_harness.py
Improved PSL harness.
Initialized PSL app.
added data files
Started PrepareRSSAnalysis.
Tweaked paths.
added MessageLoader and Entity helper class
added aux data files
Started RSSLocationPredictor
Wrote PrepareRSSAnalysis.
added first version of location predictor