Single function to add/commit/push gists (gpsgst)

other aliases/functions:
- untar: extract .tar files
- ideb: install .deb files
- dum: display directory sizes in terminal

dotfiles/Xresources

@@ -4,7 +4,8 @@ URxvt.font: xft:hack:size=12
 URxvt*inheritPixmap: true
 URxvt*transparent: true
 ! URxvt*shading: 0 to 99 darkens, 101 to 200 lightens
-URxvt*shading: 40
+! URxvt*shading: 40
+URxvt*shading: 20
 /* }}} transparency */
 
 URxvt.scrollBar: false