Autocomplete git in mac OS not working?

Question

I am using git in mac. I am trying to have the autocomplete feature. I followed these steps (http://www.codethatmatters.com/2010/01/git-autocomplete-in-mac-os-x/) but I get this

Answer 1

Was getting .git-completion.bash: bash: bad interpreter: No such file or directory in Mountain Lion.

Should be "source ~/.git-completion.bash" in ~/.bash_profile