Update README.md

README.md

@@ -1,3 +1,9 @@
 # Labelize
 
-Music album web page generator : 1 folder with music files + 1 cover image = 1 single page app with audio player
+Music album web page generator : 1 folder with music files + 1 cover image = 1 single page app with audio player
+
+# Usage
+
+```
+python labelize.py inputDirectory outputDirectory
+```