update: Updated ReadMe

Author: vpatidar-systango

README.md

@@ -20,6 +20,14 @@ You would need to add a configuration folder named `.github` at the root of your
 ```
 PR_TITLE_REGEX: <PR Title Regex>
 COMMIT_MESSAGE_REGEX: <Commit Message Regex>
+OUTPUT_TITLE_FAIL: Message validation failed!!!
+OUTPUT_TITLE_SUCCESS: Message validation passed!!!
+VALID_COMMIT_MESSAGE: Commit messages are valid
+INVALID_COMMIT_MESSAGE: Commit messages are invalid
+SINGLE_OTHER_INVALID_MESSAGE: other message is invalid
+MULTIPLE_OTHER_INVALID_MESSAGE: other messages are invalid
+VALID_PULL_REQUEST_MESSAGE: Pull request title is valid
+INVALID_PULL_REQUEST_MESSAGE: Pull request title is invalid
 ```
 
 ## Usage