readme

README.md

@@ -2,7 +2,7 @@
 
 A partial update program. Use [Zstandrard](https://github.com/facebook/zstd).
 
-`zsdiff` products a [filename].zdiff file. It compares ALL file hashes from old with new.
+`zsdiff` products a [filename].zdiff file and [filename].zdiff.md5. It compares ALL file hashes from old with new.
 
 ```
 Usage: zsdiff [OPTIONS] --filename <FILENAME> --old <OLD> --new <NEW>
@@ -16,7 +16,8 @@ Options:
 ```
 
 `zspatch` extract files from [filename].zdiff to [dest-dir]. If some file was deleted between old and new, `zspatch`
-also delete it from [dest-dir]
+also delete it from [dest-dir].
+Flag --hash-check compare computed hash of [filename].zdiff and hash from [filename].zdiff.md5
 
 ```
 Usage: zspatch [OPTIONS] --filename <FILENAME> --dest-dir <DEST_DIR>
@@ -25,5 +26,5 @@ Options:
   -f, --filename <FILENAME>  
   -d, --dest-dir <DEST_DIR>  
   -h, --hash-check           
-  -h, --help                 Print help
+  --help                    Print help
 ```