replacing cpio by rsync to copying livecd to disk

This feature has been tested and has no issue reported yet compare to cpio. Cpio failed to copy file sometime.
Omit to copy if [ "$?" != "0" ] last edit
Changed remove GhostBSD user of place

This feature Fixed the removal of the GhostBSD user.
Refined the code for GhostBSD auto login
Merge pull request #43 from ericbsd/master

replacing cpio by rsync for copying livecd to disk