def current_command_version
      output = command('version', [], false)
      version = output[/\d+\.\d+(\.\d+)+/]
      version.split('.').collect {|i| i.to_i}
    end
def current_command_version
      output = command('version', [], false)
      version = output[/\d+\.\d+(\.\d+)+/]
      version.split('.').collect {|i| i.to_i}
    end
returns the current version of git, as an Array of Fixnums.