joseairosa/app-tester — pull request #1 by fuzzmonkey (2012-11-08 11:01:28+00:00)
Title: Add mandatory arguments

You can now specifiy a mandatory argument by passing true as the final
argument to set_option. E.g :

`options_parser.set_option(:smiles_file, "-f", "--smiles-file
FILE","File containing SMILES to standardize", true)`

If this argument isn't present, the script will abort with a handy
error message.