[#34] Better Notification System

Proposed changes

Fixes #34

This PR aims to create a new interface to send better notifications. Old code was removed from the demo and an obsolescence message was added to the old notification system. The new design is based on a Creation Pattern or Buidler Pattern

Types of changes

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[ ] Bugfix (non-breaking change which fixes an issue)
[X] New feature (non-breaking change which adds functionality)
[ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
[X] Documentation Update (if none of the other choices apply)

Checklist

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[X] I have read the CONTRIBUTING.md
[X] I have added tests that prove my fix is effective or that my feature works
[X] I have added necessary documentation (if appropriate)

Further comments

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OneLiteFeatherNET / Microtus