def git(commands={})
      if commands.is_a?(Symbol)
        run "git #{commands}"
      else
        commands.each do |cmd, options|
          run "git #{cmd} #{options}"
        end
      end
    end
def git(commands={})
      if commands.is_a?(Symbol)
        run "git #{commands}"
      else
        commands.each do |cmd, options|
          run "git #{cmd} #{options}"
        end
      end
    end
Run a command in git.

   git :init
   git add: "this.file that.rb"
   git add: "onefile.rb", rm: "badfile.cxx"