title: Upgrading NodeJS on SemaphoreCI
body: <p>I'm using <a href="https://nodejs.org/en/" rel="nofollow noreferrer">NodeJS</a> and running the project through <a href="http://semaphoreci.com" rel="nofollow noreferrer">SemaphoreCI</a>. 
  The project works fine on my machine but fails on Semaphore. I suspect that it is because of node version difference (mine is v5.5, Semaphore is using v0.12).</p>
  
  <p>Google gave me <a href="https://askubuntu.com/questions/426750/how-can-i-update-my-nodejs-to-the-latest-version">so</a> <a href="https://stackoverflow.com/questions/10075990/upgrading-node-js-to-latest-version">many</a> <a href="https://stackoverflow.com/questions/6237295/how-can-i-update-node-js-and-npm-to-the-next-versions">results</a> on how to upgrade my node, but almost all of these need <code>sudo</code> access. I was wondering if anyone had similar issues on Semaphore. </p>