Reinserted the missing '!' from the shebang line.
aks:externalize git prompt colors; add help func
aks: don't cause errors if the git-prompt-colors.sh file is missing
Merge branch 'master' of https://github.com/aks/bash-git-prompt into aks-master
Added sourcing of git_prompt_help.sh to gitprompt.sh
Colorized git-prompt-help with configured colors and symbols
Fixed Symbols for ahead and behind