Vim-within-vim in the IPython Notebook.
This is a work in progress. For now, put these files into the extensions
subdirectory of whatever ipython locate returns, usually these files go into
the ~/.ipython/extensions directory.
Once you do that, in the notebook, just make a cell that will do
%load_ext vimception
It's all very rough right now, I'm working on it, so hang tight.