README still points to nodejs IRC room

[maraca]

https://github.com/iojs/io.js#resources-for-newcomers

Is there an IRC channel for io.js?

[cjihrig]

Yes. #io.js

[maraca]

Mind if I submit a PR?

[cjihrig]

Go for it :-)

[chrisdickinson]

Fixed in 550a444.