fix fragment sentence in readme

add more info on why not using wmutils

README.md

@@ -78,7 +78,7 @@ These window managers currently will work with '-a'. I will add a lot more.
 Necessary features don't work on many window managers, including mine.
 
 ## Why Not Use wmutils?
-Maybe in the future. The only advantage I can see over xdotool is that it can toggle mapping (`mapw -t`), but this wouldn't be used in this script anyway since different code is executed depending on whether or not 
+Maybe in the future. The only advantage I can see over xdotool is that it can toggle mapping (`mapw -t`), but this wouldn't be used in this script anyway since different code is executed depending on whether or not the window is mapped or unmapped. Also the command names are somewhat cryptc and resizing to a percentage isn't supported (would have to convert percentages to pixels).
 
 ## Similar:
 - [drawer](https://github.com/lharding/lsh-bin/blob/master/drawer)