Make CheatSheet

Nothing to be done for target name

Base on https://stackoverflow.com/questions/8561640/make-nothing-to-be-done-for-all

Your editor is using space instead of tab for Makefile, which is common for intellij. If you use vim to open the Makefile, you can see read highlight on the spaces, and vim will use tab for Makefile by default (at least for Ubuntu and Mac). You can change the space to tab for Makefile in editor or install the Make plugin for intellij.