title: fabric up the network failed
body: <p>When I execute the command <code>./byfn.sh -m up</code></p>
  <p>The following error occurs:</p>
  <blockquote>
  <p>Starting with channel 'mychannel' and CLI timeout of '10' seconds and CLI delay of '3' seconds</p>
  <p>Continue? [Y/n] y</p>
  <p>proceeding ...</p>
  <p>docker: Cannot connect to the Docker daemon at tcp://127.0.0.1:4243. Is the docker daemon running?.</p>
  <p>See 'docker run --help'.</p>
  <p>LOCAL_VERSION=1.1.0-rc1</p>
  <p>DOCKER_IMAGE_VERSION=</p>
  <p>=================== WARNING ===================</p>
  <p>Local fabric binaries and docker images are</p>
  <p>out of  sync. This may cause problems.</p>
  <p>===============================================</p>
  <p>ERROR: Couldn't connect to Docker daemon. You might need to start Docker for Mac.</p>
  <p>ERROR !!!! Unable to start network</p>
  </blockquote>