Please update docs with example for running JGen.py

[anrei0000]

Hello, this looks interesting and I want to test things out.

I couldn't run the script in under 1 minute so I'm showing what I did. Possibly a simple copy paste example in the docs will help.

[anrei0000]

Adding template.txt changes

[harrison-broadbent]

Hey thanks for the feedback. I'll add some more details but make sure you're running it as a python script and not a shell script -

python3 JGen.py

Rather than -

./JGen.py

[harrison-broadbent]

@anrei0000 I just updated the README with a getting started section, hope that helps clarify things a bit.

Thanks for the feedback and for checking out this project!