Image hosting instructions for contributors

[Frijol]

We don't have a well-defined process for contributors to add images to repos. We've shied away from including "images" folders in repos (for the most part) to reduce repo bloat/git clone slowness, but haven't clarified in a style guide where we do want images hosted.

Team Members have access to a Tessel Project Imgur, older image assets are on AWS from Technical Machine days, and we have a few miscellaneously hosted images too. What is our preference or guideline?

[accordingtoherr]

@Frijol i want to work on this and help out with some ideas

[Frijol]

Hi @accordingtoherr you're welcome to! I don't have particularly strong preferences on this one, so a PR that adds opinionated instructions somewhere on this repo (Contributing.md probably?) would resolve