Session7 Homework

Circle assignment is completed and functional.  Additional updates to render may be submitted under Session6 branch.
this is a trick -- if I accept this, then I get your .gitignore -- but that's not a good one for the whole project -- it ignores some stuff I need to have in the repo.

I"ll see if I can figure out how to merge this right -- sone of this is stuff we will all want to ignore.