Update readme.md

Author: NowRishi

Mail Scripts/cc all group members/readme.md

@@ -1 +1,7 @@
-This mail script can be used to CC all members of a group of the current record.
+This mail script can be used to CC all members of a group in the current record context. 
+
+Use case: 
+CC all members of the assignment group for the current record.
+
+Solution: 
+Create the mail script as mentioned in cc all group members.js file and then call the mail script in you email notification ${mail_script: your mail script name}