Changed 'chroot' by 'rootfs'

README

@@ -152,8 +152,8 @@ lxc.mount = ./fstab
 # the hostname to be set into the container
 lxc.utsname = virtnode
 
-# the chroot if needed for the running application
-lxc.chroot = /mnt/root
+# the rootfs if needed for the running application
+lxc.rootfs = /mnt/root
 
 # The network has several of kind of configuration:
 #
@@ -192,7 +192,7 @@ lxc.network.ipv6 = 2003:db8:1:0:214:1234:fe0b:3596
  * lxc.utsname is optional
  * lxc.network.xxx are optional, if not specified, the network 
  namespace will not be created
- * lxc.chroot is optional
+ * lxc.rootfs is optional
 
 3.3 Container creation
 ----------------------