when the file `~/.divested.vars.${BDEVICE}` exists it get
sourced after the default variables set by init.sh.
so to make use of this you have to
`export BDEVICE=hotdog`
before `source ../Scripts/init.sh`. Then the file `~/.divested.vars.hotdog` will
be sourced - if existent.
this way one can:
- override defaults without touching the init.sh (makes git pull more convenient)
- set different settings for different devices
Signed-off-by: steadfasterX <steadfasterX@gmail.com>