Another implementation in C

[losfair]

I've re-implemented rm-protection in the C programming language, which is available at https://github.com/losfair/rm-protection-c .

I would appreciate it if you would add it to README.md.

[alanzchen]

Hi,

Thanks for porting! I'm more than happy add this to README.md.

Just one thing, I hope you can keep the version number (also the behavior and features) as close to rm-protection as possible in the future.

And please remove "Known issues" from your README.md it has been resolved both in rm-protection and rm-protection-c.

Thanks again for your contribution.