Just installed Visual Studio Code 1.1.1 on a Windows 7 machine. When I right-click on a folder, \"Open With Code\" does not appear.
I'd like to add that, many would like to go for the Registry method because they are afraid they might loose all their settings. Just re-download(if you don't already have the download file ) and reinstall. When reinstalling, tick
Add "Open with Code" action to Windows Explorer file context menu
Add "Open with Code" action to Windows Explorer directory context menu
as already said in other answers. Your settings will remain intact. In fact, when it launches, it launches with your working directory as if you never uninstalled it.