Updated convert.py
committing old trips.in.gz to reset
#42: fixing up the divvy data
#42: first functional dc.js demo
#42: grouping trip duration into fewer dimension values
#42: updating divvy mappings to not analyze facet fields
Merge branch 'feature/42-data_visualization_demo' of https://github.com/Spantree/elasticsearch-talk into feature/42-data_visualization_demo

Conflicts:
	data/bulk/divvy.json.bulk.tar.gz
	visualizations/bower.json
	visualizations/bower_components/crossfilter/.bower.json
	visualizations/index.html