title: Document management system using Google Cloud Storage
body: <p>I am currently working on different aspect Google App Engine and still in study phase and build some small apps and deployed it on cloud.  Recently when i was installing a command line to for cloud storage(i.e. gsUtil) I encountered versioning support on cloud storage and was able to retrieve old objects or deleted objects through gsUtil . So building a document management system on GAE is good idea with Google cloud storage or I should be using Google drive SDK ? </p>
  
  <p>Please guide me on this problem .</p>
  
  <p>Thanks in advance </p>