Simplify README — remove bitdevs-upgrade references#145

bolty-from-atl-bitlab[bot] wants to merge 1 commit intomasteratlantabitdevs/atlbit.dev:masterfrom

bolty/atl-122-simplify-readmeatlantabitdevs/atlbit.dev:bolty/atl-122-simplify-readmeCopy head branch name to clipboard