Check for python dependencies

[kalpo]

It would be great if the script would check for dependencies. I had to install pyusb for instance.
Perhaps a quick check for the dependencies would be useful, even a prompt to run pip install?

[jacekkow]

I had to install pyusb for instance.

That's point #2 in "Usage" section of README:
2. Install python3 and python3-usb.

Perhaps a quick check for the dependencies would be useful, even a prompt to run pip install?

Feel free to create a pull request with the test!

[kalpo]

That's point #2 in "Usage" section of README:
2. Install python3 and python3-usb.

I can't believe I didn't see that. What a knob I am. I will get around adding the lines to check for the dependency at some point.
Thanks again for making this piece of software.