Added Zenmode extension.
Added define to make more easy setup the background image.
Merge pull request #14 from damianavila/zenmode

Added Zenmode extension.
Merge pull request #13 from bjanssen/master

Add hide_input.js.It implements an extension that hides/unhides selecte...
Added IPython logos for zenmode.
Merge pull request #15 from damianavila/zenlogo

Added IPython logos for zenmode.
sync master