Run tests via cli using karma & PhantomJS for Travis

Instead of jasmine's HTML runner, use karma to run specs. karma & all
other dependencies are installed via npm and executed via node.js. This
allows TravisCI to execute the test, and as a side effect, bumps the
versions on the testing toolchain.

- Install node.js
- Run `npm install` once to download dependencies.
- Run `npm test` to run all tests

Things to bear in mind:
- This commit adds general project information in `package.js`
- `karma.conf.js` specifies the order in which src, spec and lib files
  are loaded
- Switch to jasmine spies instead of sinon

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