Basic setup

groundwork for building out full installable
- add basic readme info
- set up `karma.conf.js`
- add `package.json` with rudimentary dependencies, test script, info
- add empty test files to be filled out
- create empty `index.js` module export
`karma-browserifast` is deprecated. Use `karma-browserify`, it now has the optimizations from `karma-browserifast`.