Merge pull request #341 from Selion05/patch-1

Add usage hint for fzf

README.md

@@ -41,6 +41,7 @@ export GIT_PAGER='<highlighter-of-your-choice>'
 # ^ can be done in your bash/zsh/rc file.
 find "$FIND_ARGS" | sad '<pattern>' '<replacement>'
 ```
+Note: `--multi` is passed to fzf so you can select multiple files with `Shift+tab` 
 
 **without fzf**