Added bootstrap styling

I've styled up the page a bit more as wanted something responsive to view on my phone. I've not touched the php, purely adding the bootstrap visual library and a little javascript to make the image fullscreen when clicked. If you want to modify the styling you will need npm, grunt and bower.

![screenshot from 2014-10-27 20 17 53](https://cloud.githubusercontent.com/assets/2211370/4798732/6c63ca10-5e16-11e4-8975-5a73185293c7.png)