That's very nice, I can see myself using this quite often.
A little feature request -- I am not very familiar with markdown, so I find myself wanting to switch back and forth between "edit" and "view" quite often. A shortcut for this (and perhaps other actions) could be useful. Or even a side-by-side comparison, where the right side would be the rendered version of what the user types in the left side (most screens today are wide enough to accommodate two columns of text).
A little feature request -- I am not very familiar with markdown, so I find myself wanting to switch back and forth between "edit" and "view" quite often. A shortcut for this (and perhaps other actions) could be useful. Or even a side-by-side comparison, where the right side would be the rendered version of what the user types in the left side (most screens today are wide enough to accommodate two columns of text).