minor update to turotial
initial vc commit.
Added local.ipynb to git
Added branch files.
some restructuring
updated remote
removed remote dir
started mobility refactor
updated mobility.
created separate remotes for github and bitbucket
updated version control lectures
some formatting updates for older versions of ipython
added vars and types
some updates
added strings and files
Added section on flow control
last min updates
added big animals
updated variables
Added start if a function module.