Added injectJs action, test, and updated readme.
Added injectJs action, test, and updated readme.
Updated to use fn(note) style. Removed bad test.
Merge branch 'injectJs' of github.com:johntitus/nightmare into injectJs

Conflicts:
	lib/actions.js
	test/index.js
Changed .injectJs to .inject. Supports javascript or css files. requires the first param to be either 'js' or 'css'.
formatting fixes and variable renaming
reject non-css/js files from inject. Updated documentation. Added rejection test
Merge pull request #34 from johntitus/injectJs

Added injectJs action so users can inject a local javascript file (like jQuery) into the page and use it. Added a test, and updated the readme.