add contribution guide
fixes #53
Thanks! I think this is a great start. I want to adjust some things, but I like the direction overall. Let me connect with you on Slack on a plan.
@okothkongo Do you have an editor that does Markdown validation? I use VSCode and the markdownlint plugin. I didn't see any spelling errors, but while you're at it, I also have "Code Spell Checker" installed and that is normally helpful.
The other thing I do with text files is word wrap them to 80 columns. I know that there are many opinions out there on this, but I really like how it looks when I read files in the shell. I use vim to wrap text (e.g., gqj to wrap the line you're on). I'm not sure how to do it in VSCode, but I'm sure there's a good way there as well.
@fhunleth thank your suggestions with regards to plugins and word-wrap I have put them into consideration in the lastest commit
Closing for now due to conflicts and other discussion. Agree that something like this is needed.