create subvolume function
deleting subvolume
whitespace
include btrfs/ioctl.h
delete config
DRY
check for subvolume
fixed syntax errors
move includes to .h file
buildrequire libbtrfs-devel, new version
subvolume management does not need configs initialization
delete_config does not need init
Merge pull request #23 from jsuchome/master

create subvolume function