Initial commit:

- quick shell to count containers
- containerHelper to get information for a specific container
Implemented fallback to /sys when no ifconfig command is available in the container.
Added memory usage.
Upgraded to python3.
First working version of the DNS updater.
Logging to file:

- Default to /var/log/docker-ddns.log
- use --log-file - to log to stdout
Fixed warning message about RE not matched.
Improved formatting.
Upstart files
Clean up:

- moved templates at the top of the file
- added a start message
Added README
Merge branch 'develop'