Version 0.3

This release changed the configuration file from json to yaml.

The code was almost completely refactored internally to be more modular for the adding of twitter/slack notifications later on.

The alerts have also been made to only check what is present in the configuration file. If you don't want to check for the alert, then don't add it in the config.

If a container does not exist, then it will alert and move on, as opposed to crashing when a container does not exist in previous versions.