Draft work on integrating webcam stream to Bowtie

This is the work I've done so far into integrating webcam stream to Bowtie. 

Changes:

- Minor Makefile changes to be able to start bowtie server
- Ability to access webcam from HTML5
- Basic websocket communication between browser and server

TODO:
- Still working on decoding the jpg Base64 string sent by the node, on the server side
- Develop more robust javascript and go code
- Maybe also capture the mic data...