Creating MIDCA Contribution Page

[TonePoems]

Dustin's recommendation for clarifying processes and standards.

[dtdannen]

Here's an initial start of a file, but it needs to be refined, please feel free to edit it HOW_TO_CONTRIBUTE.md

[mcox25]

Useful pages are also located at the following. https://docs.github.com/en/free-pro-team@latest/github/building-a-strong-community/setting-guidelines-for-repository-contributors https://opensource.guide/how-to-contribute/