title: Azure - Sentry's raven npm package not installing
body: <p>I am using CircleCI to build the project and push it to a local repository provided by Azure's Web app. Up until I added <code>raven</code> as a package to repository everything worked fine, but suddenly, this single package is refusing to be installed on azure - with no error.</p>
  
  <p>Even though when I connect to the console on Azure and check <code>package.json</code> I can see that <code>raven</code> is enlisted in dependencies (I made sure it is not in dev), for some reason it is never in node_modules.</p>
  
  <p>Any ideas why this might be happening?</p>
  
  <p>For what it's worth, build is being done on Ubuntu 14 (Circle), and it is being deployed to Windows Web App (Azure), however I fail to see how it could be relevant if <code>node_modules</code> are being installed for every step anew.</p>