title: Isolate IoJs from Nodejs
body: <p>I've just installed <a href="https://iojs.org/" rel="nofollow">io.js</a> and I noticed that now <code>node</code> command is actually running iojs (on mac os), instead of my previous installation of node.js</p>
  
  <p>Is there a way of using node.js and io.js on the same machine?</p>