fix version

Split `src.js` off of `midnight.jquery.js`
Add Gulp task to add fresh header to src, output to `midnight.jquery.js` (So please edit `midnight.jquery.src.js` from now on)
Add `.gitignore`
actually changed version in `package.json` to match [release 1.0.2](https://github.com/Aerolab/midnight.js/releases/tag/1.0.2) :)
ref #11 to prepare for CDN