example: commonjs/node based approach

Implements request #41 

[Diff without whitespace changes](https://github.com/flightjs/jasmine-flight/pull/44/files?w=1)

This depends on the commonjs-wip branch of Flight. Note the rather hacky feel of karma's commonjs plugin (requires listing of each commonjs file it needs to preprocess).
You should be able to use `karma start --single-run` instead. On `npm install`, `npm` adds the `.bin` folder to your `PATH`.

`karma start --single-run` won't work unless you have `karma` installed globally, but `npm run test` will Do The Right Thing.