title: How to convert node readable stream to RX observable
body: <p>If I have a Node js stream, say for example from something like <code>process.stdin</code> or from <code>fs.createReadStream</code>, how can I convert this to be an RxJs Observable stream using RxJs5?</p>
  
  <p>I see that <a href="https://github.com/Reactive-Extensions/Rx-node" rel="noreferrer">RxJs-Node</a> has a <code>fromReadableStream</code> method, but that looks like it hasn't been updated in close to a year.</p>