Fix package.json, Dockerize local environment, add eslint support

[ahubers]

Closes #8

Motivation

I tried getting this installed locally but because navigating a npm + node + package.json's can be like falling down a hellscape spiral staircase, I opted to dockerize the local so that it's easy to setup for everyone.

I also did some cleanup to some dependency conflicts in package.json.

I've updated the readme to reflect how to setup your local now.

Changes

• Dockerize environment (add Dockerfile, add docker-compose).
• Add persistent data store for your local mongo container.
• Added eslint packages and ./eslintrc.js so that we can enforce JS style standards.
• Fixed some package.json dependency problems.

How to test

Clone my fork and follow the instructions in the README.md. It should work!