Added ability to install / compile io.js with regular nodejs
Added ability to install / compile io.js with regular nodejs

Since nodejs and iojs versions won't collide (iojs >= 1.0.0 whereas nodejs < 1.0), the former is intended to be a drop-in replacement of the latter, and they have similar build systems, nenv can be used to install / manage both!

madumlao/nenv,ryuone/nenv