Adds support for GTFS-realtime VehiclePosition feeds via a -p command
line parameter.
Merge pull request #4 from CUTR-at-USF/vehiclePositions

Adds support for GTFS-realtime VehiclePosition feeds via a -p command
Convert to Unix line endings.
Make README flow better.
Switch to markdown-format readme.
Added VehiclePosition support info, reformatted page.

Added VehiclePosition description, example, and known limitations.  Reformatted page via Markdown.
Fix typo
Fix ServiceAlerts URL
Fix formatting for first two results tables.
Fix third table and last 2 SQL query formatting.
Fix more formatting for queries.