title: Hyperledger Composer without npm registry
body: <p>Situation:
  i'm working with the hyperledger-composer and using the fabric of "fabric-dev-server" BEHIND the proxy in a enterprise-environment without access to the internet!</p>
  
  <p>Question:
  How can i managed to work without a npm-Registry (because i did not have one local). I tried out to do some "localhost" -statements in the npmrcFile but this doesn't work. </p>
  
  <p>Is there any chance to Start my business-network ?</p>
  
  <p>thx</p>