Create HTTP API for recording

Related Issue:
https://github.com/Freeseer/freeseer/issues/435

This is currently just a prototype for the HTTP API.  It uses Flask and Flask-Restful to handle incoming HTTP requests and route them to the corresponding method.  Right now it is still very rough, it is using a different instance of Multimedia than the rest of Freeseer to do the recording.  

Proposal Document:
https://docs.google.com/document/d/1VR7kqTOw4A8fGyeUX0YlzgsNZ4H2ORXeF3WXmTfHCj8