Merge pull request #36 from aks/master

Added git-status.sh and configure its use in gitprompt.sh.  Updated README.
Associative arrays does not work on Bash 3 (OS X for instance). Change to ordinary variables to be more compatible.
Merge pull request #38 from ogr3/master

Associative arrays does not work on Bash 3 (OS X for instance). Change t...
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
aks:testing new file in local, but not in remote
Merge remote-tracking branch 'original/master'

* original/master:
  Fixed Symbols for ahead and behind
  Colorized git-prompt-help with configured colors and symbols
  Added sourcing of git_prompt_help.sh to gitprompt.sh
  Associative arrays does not work on Bash 3 (OS X for instance). Change to ordinary variables to be more compatible.