Fix 'wayting' -> 'waiting' typo in README.md
Fix 'wayting' -> 'waiting' typo in README.md

plague-doctor/bash-git-prompt,magicmonty/bash-git-prompt,ogr3/bash-git-prompt,plague-doctor/bash-git-prompt,ogr3/bash-git-prompt,magicmonty/bash-git-prompt,gullevek/bash-git-prompt,gullevek/bash-git-prompt,plague-doctor/bash-git-prompt,magicmonty/bash-git-prompt,ogr3/bash-git-prompt,gullevek/bash-git-prompt