Use OpenSSL vs Ruby HMAC

[metaskills]

So I was just looking at using pusher for the first time and as I typically do, I review its gem dependencies. When I did a little research on Ruby HMAC, I found that its project page is abandoned and that they recommend using OpenSSL instead. The links are below.

https://github.com/topfunky/ruby-hmac
http://blog.nathanielbibler.com/post/63031273/openssl-hmac-vs-ruby-hmac-benchmarks

Has this come up before? Would you be open to a pull request for the update?

[metaskills]

Made a gist with an updated benchmark in context of how Pusher uses Ruby HMAC. https://gist.github.com/2607144

[mloughran]

Thanks for bringing this up Ken, I've committed a change which will be in the next release. If you're looking at dependencies you'll also notice that the signature gem relies on ruby-hmac - that will also be fixed in the next release. Cheers.