Update README.md

Add relational case statement

Author: alii94

README.md

@@ -1125,13 +1125,13 @@ int month = 3;
 string monthString;
 switch (month)
 {
- case 1:
+ case >= 1 and <= 1:
  monthString = "January";
  break;
- case 2:
+ case >= 2 and <= 2:
  monthString = "February";
  break;
- case 3:
+ case >= 3 and (< 3 or 3):
  monthString = "March";
  break;
  // You can assign more than one case to an action