Pillar editor - Atom hides .ignored files

It might just be the configuration of Pillar used for the
PharoLaserGameTutorial, but directory with the sources files get
cluttered with a lot of generated files.  However I discovered something
interesting using Atom to edit the Pillar files. You can set the "Hide
Vcs Ignored Files" option in the Tree View package to ignore the files
configured in .gitignore.  This really cleans up the navigator.

btw, one for the wish list.... I like the way Atom provides a nice list
of Keybindings per package, as well as overall.  It would be nice to
have something similar in Pharo.

cheers -ben