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).
unfortunate that 'flight' is taken in the npm registry. probably need to include something in the README about aliasing to 'flightjs' when using bower.