Added warning about changing the RSA key to README
Merge pull request #15 from AndreSchumacher/master

Added warning about changing the RSA key to README
Minor change to README
Merge pull request #16 from AndreSchumacher/master

Minor change to README
Fixing issue with nameserver startup script (affected by newer Docker versions)
Improving error checking when starting Docker containers
Attempting to solve name resolution issues in scripts with new Docker releases
Updating README and improving log output
Allowing for nameserver to refresh cache before starting shell
Adding TODO to start_shell.sh