Added a 20-private.example file so that the HowTo can actually be followed.
Added a 20-private.example file so that the HowTo can actually be followed.

wmbutler/courtlistener,brianwc/courtlistener,Andr3iC/courtlistener,brianwc/courtlistener,voutilad/courtlistener,shashi792/courtlistener,Andr3iC/courtlistener,shashi792/courtlistener,voutilad/courtlistener,voutilad/courtlistener,brianwc/courtlistener,wmbutler/courtlistener,shashi792/courtlistener,voutilad/courtlistener,shashi792/courtlistener,Andr3iC/courtlistener,wmbutler/courtlistener,brianwc/courtlistener,shashi792/courtlistener,voutilad/courtlistener,Andr3iC/courtlistener,wmbutler/courtlistener,brianwc/courtlistener,wmbutler/courtlistener,Andr3iC/courtlistener