edited README

README.md

@@ -22,7 +22,15 @@ Inspired by [`tiramisu`](https://github.com/Sweets/tiramisu)
 ## Usage  
 
 ```bash
-snot [r|j|p] [v]
+snot --help
+Usage: snot [-f <format>] [-v]
+
+Print desktop notifications
+
+Options:
+  -f, --format      select output format: r(rson), j(json, default), p(plain)
+  -v, --verbose     verbose mode
+  --help            display usage information
 ```
 
 ## Why this project?