Adds some reminders about the git status of current working directory, to the bash prompt. Mimics the github display of ahead/behind. Two commits behind, seven commits ahead: 2 behind <--|-------> 7 ahead master imac:bash-prompt-git-status jseb$ Six commits ahead: |------> 6 ahead master imac:bash-prompt-git-status jseb$ Eight commits behind: 8 behind <--------| master imac:bash-prompt-git-status jseb$ In sync with remote: master imac:bash-prompt-git-status jseb$ Colour of branch name: green: working directory clean yellow: local changes red: untracked files