Update README

Clarify IPython-contrib status
Execute timings initial commit

This extension displays below the input box when the last execution of
a cell occurred and how long it took.
updated the license and the description
Added toggle all/current menu

Also got rid of checkboxes in the cell toolbars
Merge remote-tracking branch 'upstream/master'
Starting the timer on a more precise event

Patching cell.execute() to trigger a new event. Listening this event
instead of execution_request.Kernel
Merge pull request #77 from jcjaskula/executeTimings

Show when and how long a cell has been executed
Merge remote-tracking branch 'upstream/master'
Update aspell extension

- use require to load CSS
- load CSS from /nbextensions now
Added images for the wiki page
Merge pull request #80 from juhasch/aspell

Update aspell CSS loading
Merge pull request #81 from jcjaskula/executeTimings

Added images for the wiki page
Only activate drag&drop in command mode

The Drag&Drop should only work when in command mode, in edit mode,
handling by CodeMirror is fine.
Merge pull request #82 from juhasch/dragdrop

Only activate drag&drop in command mode
Merge remote-tracking branch 'upstream/master' into python-markdown