Covers the project with browser tests, not only V8 via node/iojs. Tests are runned with [zuul](https://github.com/defunctzombie/zuul) which
provides simple local browser testing, aswell as cloud testing on multiple browsers with [saucelabs](http://saucelabs.com).
- Documented required version of npm while developing
- Use the latest npm client for node >= v0.8 on travis
Special quirks to get node v0.6 supported:
- npm client v1.3.26 on travis
- jshint 2.4.4 as >= 2.5.x breaks