Add support for images

[drkarl]

Support to include images on the notes, drag and drop an image and paste an image on the clipboard. That would be awesome :octocat:

[grena]

:+1: it could be really nice.

[wbrbr]

You can insert an image like this: ![Image](http://path/to/image) Example: http://gruik.io/view/426 Drag-and-drop would be nice, I'm gonna try to implement it :)