Add huxley options:

* actions:  record, update, and playback (default)
* browser: chrome and firefox (default)
* server: selenium server URL
* driver: custom webdriver function
Add gulp-util to package.json
Decouple http server and selenium

closes #1
- remove http and selenium from index.js
- add http and selenium to gulpfile.js
Merge pull request #2 from thgaskell/pr2-decouple

Decouple http and selenium server from gulp-huxley
Merge branch 'master' of github.com:joukou/gulp-huxley
Consistent syntax.
Syntax inconsistencies.
Another formatting