Update .bashrc

ENH show if repo is modified in prompt
Merge pull request #1 from chrisspalm/patch-1

Update .bashrc: show if git repo modified
TWK bashrc; vimrc
ENH ignore less commands in history
REF use ipdb instead of pdb
ENH make flake8 shortcut
ENH in bashrc mf now an alias for make full_test
Update .bashrc
Merge pull request #2 from chrisspalm/patch-2

Update .bashrc
ENH no backup