Explain command line arguments better

[mjuenema]

It would be helpful if the online help provides better information. For instance the --noterraform flag stops the script from looking for state files in the .terraform directory. At least that's what I deduce from the source code. This is not well explained in the help output.

--noterraform         do not use terraform from path (default: False)

[Theaxiom]

Thanks for the feedback @mjuenema !