Set the IPython version explicitly.
Added another ignore (the patch touch file).
Converted python file to patch.
Added patching target.

Also added a cleanup target.
Switched to absolute paths for deps.

This fixed an issue where the console found all the deps by the notebook did
not.
Updated install steps and added requirements.
Updated TODO list in demo notebook.
Fixed file perms on .gitignore.
Removed trailing whitespace.
Updated notebook.
Bumped version number.
Merge branch 'automate-ipython-patch' of https://github.com/oubiwann/ierlang into oubiwann-automate-ipython-patch
Merge branch 'oubiwann-automate-ipython-patch'