Index: Add 2020 infographic from Smera Goel
This commit adds the 2020 infographic created by @smeragoel to the
CommOps docs home page. It also commits the PNG and SVG source to the
repo (so at least it is tracked in VCS somewhere).
This is a late follow-up to issue #214.
Signed-off-by: Justin W. Flory (he/him) <email@example.com>