NPM config file

- Added package.json so that one can run `npm install` and get all the dev
  environment they need to run tests.
- Added the `default` task as an alias for `test:unit`.
- Moved `test/karma.unit*.configFile` to ./.
- Just picket the MIT licence.
Merge pull request #2 from gurdiga/package_json

NPM config file and test grunt updates