Create CONTRIBUTING.md

[Venefilyn]

To help with open source work, there should be a CONTRIBUTING.md file that includes how to get it started locally, what coding standards to use, the code integration process used, and eventual testing.

[RheaAyase]

https://help.github.com/en/github/building-a-strong-community/setting-guidelines-for-repository-contributors

coding standards
https://docs.microsoft.com/en-us/dotnet/standard/design-guidelines/naming-guidelines

[RheaAyase]

Contributing.md should also contain inf on how to create pullrequests since git workflow isn't that natural around reddit and other similar platforms.

1. Fork
2. Clone
3. Always create a new branch
4. Code, commit, push
5. Create pullrequest from this feature branch to master
6. Update your master, create new branch, code commit push, pull request, repeat repeat :)

Futher in order to update from upstream master:

1. git remote add upstream git@github.com:justcool393/BotTerminator.git
2. Check with git remote -v
3. git checkout master && git pull upstream/master