title: Composer-Rest-Server not connecting
body: <p>I am testing a a business network I created, I ran the Composer-rest-server and all worked fine, then shut the server as suggested in the developers guide , then I proceeded use the yo hyperledger composer to create the skeleton of the angular app, however, now the angular app is showing in the local browser, however, the composer-rest- server is not.</p>
  
  <p>Expected Behavior:
  I should start the composer-rest- server in localhost:3000 and the angular app as well</p>
  
  <p>Actual Behavior:</p>
  
  <p>I get this message;
  scovering types from business network definition ...
  Connection fails: Error: Error trying to ping. Error: Error trying to query chaincode. Error: Connect Failed
  It will be retried for the next request.
  Exception: Error: Error trying to ping. Error: Error trying to query chaincode. Error: Connect Failed
  Error: Error trying to ping. Error: Error trying to query chaincode. Error: Connect Failed
  at _checkRuntimeVersions.then.catch (/home/node/.nvm/versions/node/v6.11.2/lib/node_modules/composer-rest-server/node_modules/composer-connector-hlfv1/lib/hlfconnection.js:696:34)</p>
  
  <p>Your Environment
  composer-cli@0.11.3
  generator-hyperledger-composer@0.11.3
  composer-rest-server@0.11.3
  Docker version 17.06.0-ce, build 02c1d87
  docker-compose version 1.13.0, build 1719ceb</p>