added models and resources for use with RFID
- PresenceData
- PresenceSensor
- Person
added basic PresenceSensor tests
dynamically generated URLs for resources from a static property, resource_name, found in each resource
added dynamically generated schema and customized deserialization dependent on what arguments are provided in the GET params (and which arguments the user is expected to provide).  This is especially important for creating presence data.
auto PEP8
wrote rfidpost collector script
updated informational message representing a presence datum to note when people leave
fixed get_tags for two sensor types
increased polling rate to match old rfid scraper script
added rfid supervisor script
Merge remote-tracking branch 'origin/pr/39'
PEP8 fixes to RFID collector and now using logging module instead of prints
adds some logging for RFID data posting