Results 2 issues of Chase Mortensen

[**Link to the issue**](https://github.com/msk-apps/msk-markdown/issues/40) Fixes #40. **Describe the pull request** Adds markdown extension to CONTRIBUTING and LICENSE files in order to improve readability on github. **Screenshots** N/A **Upgrades** N/A

**What is the improvement?** Github formats markdown files nicely, but it doesn't recognize these files as being markdown since they are missing the extension. **Additional context** I think this small...

documentation