Update README.md

Update docs

Author: pitbulk

README.md

@@ -510,7 +510,7 @@ $advancedSettings = array (
         // Set to false and no AuthContext will be sent in the AuthNRequest.
         // Set true or don't present this parameter and you will get an AuthContext 'exact' 'urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport'.
         // Set an array with the possible auth context values: array ('urn:oasis:names:tc:SAML:2.0:ac:classes:Password', 'urn:oasis:names:tc:SAML:2.0:ac:classes:X509').
-        'requestedAuthnContext' => true,
+        'requestedAuthnContext' => false,
 
         // Indicates if the SP will validate all received xmls.
         // (In order to validate the xml, 'strict' and 'wantXMLValidation' must be true).