Updated Readme.md with an autoclass example

[smarie]

Hi there,

I wrote a library that fits quite nicely with enforce and would like to share it with you : autoclass. Notice how it completes enforce with validators and code generation. If you find this work interesting, would you be so kind to add a reference to it in the readme of enforce? This pull request is an attempt to provide such an example in the readme but of course it is probably not the way you would put it so feel free to modify..

Thanks again for this great lib! Sylvain

[coveralls]

Coverage remained the same at 93.673% when pulling 1a5e37feacd09d0f1b13d8b7ad597c4dea40d9ab on smarie:patch-1 into caf1dc3984c595a120882337fa6c2a7d23d90201 on RussBaz:master.

[TheDataLeek]

We haven't talked a ton about including related libraries in our README, and I'd be more inclined to add a new section called something like "Related Projects" so there's no confusion about core enforce functionality.

[smarie]

Of course, I understand. Do you want me to change the PR accordingly ? Cheers