Update Readme with information on the `jq` command and links to install it

[Stargator]

I suggest updating the README for any requirements for running the script locally. I do not recognized the jq command and that is making it tough to investigate issues of error results with the tests.

[Sgoettschkes]

jq is a command-line json processor, see https://stedolan.github.io/jq/

The page should outline how to install it on your system.

[Stargator]

@Sgoettschkes Thanks. I think I'll rename this issue to add that info to the README

[Sgoettschkes]

If you'd like I could write something into the README.

[Stargator]

@Sgoettschkes Feel free to do so. Thank you.