Please add a LICENSE

[danielbprice]

Hi, I was trying to read the documentation for this code today, and it will not display on https://pkg.go.dev/github.com/steinfletcher/apitest-jsonpath, and the reason given is "Documentation not displayed due to license restrictions."

I think the issue might be that there is no LICENSE file at all for this code; this may also make developers hesitant to use it. Thanks! I have been enjoying learning about and using apitest.

[steinfletcher]

Thanks Daniel, will do!