Issue #3174273 by Chi, richienabuk, HongPong, diamondsea, lennyaspen, mherchel, rpayanm, Dan_Rogers, agileadam, hudri, Webbeh, paper boy, Murz, tobiasb, a_alshamiri, kovtunos, alisonjo315, geek-merlin, seutje: Add cheat-sheet.md