README.md in unibits-2.1.1 vs README.md in unibits-2.2.0

@@ -14,9 +14,10 @@
 - Red for invalid bytes
 - Orange for unassigned bytes/characters
 - Blue for control characters
 - Light blue for blanks
 - Non-control formatting characters in pink
+- Green for marks (Unicode only)
 - Random color for all other characters
 
 ## Setup
 
 Make sure you have Ruby installed and installing gems works properly. Then do: