Add some directions about how to perform "mkfs.btrfs" in a privileged container
base: turn on kernel dhcp client
base: disable tcl dhcp
Merge pull request #243 from tianon/add-privileged-mkfs-to-readme

Add some directions about how to perform "mkfs.btrfs" in a privileged container
Merge pull request #244 from proppy/kernel-dhcp

base: turn on kernel dhcp client
If mount fails, let's "modprobe" the partition type and try again

It would appear that mount fails to "modprobe btrfs" for whatever reason.  This is a reasonably clean workaround for that problem (modprobe $PARTITION_TYPE).