resolves #14

Author: Cerem Cem ASLAN

README.md

@@ -11,20 +11,18 @@ displays the differences.
 
 Usage
 -----
-       usage: btrfs-snapshots-diff.py [options] -p PARENT [-c CHILD]
+       usage: btrfs-snapshots-diff.py [options] -p PARENT -c CHILD
               btrfs-snapshots-diff.py [options] -f FILE
 
        Display differences between 2 Btrfs snapshots
 
        optional arguments:
-         -h, --help            show this help message and exit
-         -p, --parent PATH     Path to PARENT (older) snapshot. 
-                               (must exist and be readonly)
-         -c, --child PATH      Path to CHILD (newer) snapshot. 
-                               (will be created if it does not exist)
+         -h, --help            Show this help message and exit
+         -p, --parent PATH     Path to PARENT (older) snapshot (must be readonly)
+         -c, --child PATH      Path to CHILD (newer) snapshot 
          -f, --file FILE       Path to diff file generated by 
                                "btrfs send --no-data -p first second > FILE"
-         -t, --filter          do not display temporary files or any time modifications (just latest)
+         -t, --filter          Do not display temporary files or any time modifications (just latest)
          -a, --by_path         Group commands by path
          -s, --csv             CSV output
          -j, --json            JSON output (commands only)