Add a CODE-OF-CONDUCT.MD for the project

[MeisterRed]

I've noticed that in many other GitHub projects, a code of conduct is created to provide standards as to how contributors should behave and how they can participate in the project.

In this file, we can pretty much define what we consider is acceptable behavior and unacceptable behavior. We can also provide information as to how someone can report something that violates the code of conduct. This idea doesn't really have to be enforced but I believe it would be a good idea to have something like this in the future.

We could also just make use of the Seneca code of conduct and just add a link to it somewhere in the overview documentation instead of creating an entire new file

[MeisterRed]

I will take on the task and create the code-of-conduct.md file