Proper usage message output

[elfmimi]

Executing progen without any arguments shows error message:

Traceback (most recent call last): File "/home/username/VENV/bin/progen", line 8, in sys.exit(main()) File "/home/username/VENV/lib/python3.9/site-packages/project_generator/main.py", line 70, in main return args.func(args) AttributeError: 'Namespace' object has no attribute 'func'

I suppose something like this is required

    def print_usage(args):
        parser.print_usage()
    parser.set_defaults(func=print_usage)

before this line.

https://github.com/project-generator/project_generator/blob/34d9d7b4cabd053404e8560c0479cfc6d597d1ae/project_generator/__main__.py#L51

[0xc0170]

Thanks for the report, Ill check

[0xc0170]

@elfmimi I am fixing some other errors today. Feel free to send a pull request, I'll review.

[0xc0170]

Fixed via #501 , thanks