A minimalist ZSH theme with git support

This theme requires:

• git-prompt plugin (which requires python).
• Powerline Fonts.

• If the previous command succedded or failed (green or red arrow)
• Git status
  • Current branch / SHA1 if detached head state
  • Dirty working directory (✘)
• Working directory
• Time at which control was returned to the user
• Last command duration