Added the other essential note: enable copy/paste!

Author: johan

README.md

@@ -9,3 +9,9 @@ download and unzip
 into `/Library/QuickLook/` (to install system-globally),
 or into `~/Library/QuickLook/` (to install for yourself only).
 You may need to create this directory, if it does not exist.
+
+To get sweet copy/paste functionality while in QuickLook, also run
+
+    defaults write com.apple.finder QLEnableTextSelection -bool true`
+
+from a Terminal window.