Data is too big to put onto github, so run "python fetch_cta_data.py" to download and unzip "google_transit.zip"
Useful links:
CTA GTFS Data: http://www.transitchicago.com/downloads/sch_data/ http://www.transitchicago.com/asset.aspx?AssetId=5219
Train Tracker API: http://www.transitchicago.com/developers/traintracker.aspx http://www.transitchicago.com/traintracker/ http://www.transitchicago.com/traintrackermap/
BusTracker API: http://www.transitchicago.com/developers/bustracker.aspx http://www.ctabustracker.com/bustime/eta/eta.jsp http://www.ctabustracker.com/bustime/map/displaymap.jsp
Customer Alerts API: http://www.transitchicago.com/developers/alerts.aspx http://www.transitchicago.com/travel_information/railstatus.aspx
Ridership & other data: http://www.transitchicago.com/data/
DIY Display: http://www.transitchicago.com/developers/diydisplay.aspx
Google Maps Developer: https://developers.google.com/maps/