description added and newline remove

rotate-keys

@@ -1,5 +1,14 @@
 #!/usr/bin/env python3
 
+"""
+This script will rotate the oldest AWS key and will update the .aws/credentials file. Run
+mulitple times to rotate all the keys.
+
+Options to set the newly crated keys as the default keys in the .aws/crednetials file is
+an option.
+"""
+
+
 import logging
 import sys
 import argparse
@@ -170,7 +179,6 @@ def main():
         print("No new key available to update credentials file")
 
 
-
 if __name__ == "__main__":
     main()