Document creating pre-compiled schemas for CSP with ajv-cli

[GrahamLea]

What problem do you want to solve?
Easily understanding how to use ajv with a Content Security Policy that doesn't include unsafe-eval.

What do you think is the correct solution to problem?
The README.md should contain a section on how to use ajv-cli to create and use pre-compiled schemas. I found how to do this eventually, but only after lots of googling.

Will you be able to implement it?
Nope.

[epoberezkin]

There is the part about ajv-cli: https://github.com/ajv-validator/ajv/blob/master/README.md#command-line-interface

The structure definitely needs to be improved - there is a recent ticket about it.

It would be great if you could suggest the amendments based on your experience.