Mobile travel-sample installation instructions with Docker need to be fixed

1. "The Sync Gateway will be launched with the config file named sync-gateway-config-travelsample.json that you should have downloaded as part of the Travel Mobile App install. "
This step assumes the step "Installation" has been performed, so this step should be brought forward. Also the link to the "Travel Mobile App install" is broken

2. "Note that when you launched the Couchbase Server docker container, you gave it the name of "cb-server". Replace localhost in the file with cb-server and save."
The downloaded configuration file is already using cb-server

3. Sync gateway fails to start after modifying the configuration as described. It is unable to find "cb-server". "localhost" does not work either. It worked for me only when I specified the IP of the Docker network. Also the user credentials must be fixed. There is no user "admin" in the Couchbase cluster.

Reporter: Vaidas Gasiunas
E-mail: vaidas.gasiunas@couchbase.com