added Dockerfile with volume container to test containerization
modified dockerfile and webcam.js to run on docker ubuntu ccontainer - first successful containerized version
fixed commented-out entrypoint: dockerfile now runs like executable
changed Vagrantfile to map /webcampics to /webcampics for data archival
modified Dockerfile for use on RPi (changed base image to resin/rpi-raspbian)
changed TimeToLive to 10 min and added init function to server program to delete a subscription and reinstantiate it
Merge branch 'rpi-dockerize'
added comments and improved modularity and readability of webcam.js and Vagrantfile
improved jpgServer modularity and readability, and added comments to Dockerfile
modified gitignore to include current.jpg
added a few comments
merged master changes and added comments