Revert "do not document install-qibuild scripts anymore"

Not ready for pip yet ...
This reverts commit 06a94f3d8a369a4a6e64ebd76e3db963f583dc42.

Change-Id: Ib24c5f231c5f7c7f67d97ec50070548b6dbe3b3a
Reviewed-on: http://gerrit.aldebaran.lan:8080/15574
Tested-by: gerrit
Reviewed-by: dmerejkowsky <dmerejkowsky@aldebaran-robotics.com>
Tested-by: dmerejkowsky <dmerejkowsky@aldebaran-robotics.com>