docs: add Design section to README and fix hot cache size - #31

docs: add Design section to README and fix hot cache size#31

thrawn01 merged 4 commits into

maingroupcache/groupcache-go:mainfrom

thrawn01/eng-566-showcase-the-design-and-roadmap-in-readmegroupcache/groupcache-go:thrawn01/eng-566-showcase-the-design-and-roadmap-in-readmeCopy head branch name to clipboard