.editorconfig to get the tab width correct on GitHub

[nedbat]

https://github.com/nornagon/jonesforth/blob/master/jonesforth.S says:

Secondly make sure TABS are set to 8 characters.  The following should be a vertical line.  If not, sort out your tabs.

and looks like this currently:

GitHub will honor the settings in a .editorconfig file. With this file in place, it looks like this: