Adds copyright section to ct.pod

Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

doc/crypto/ct.pod

@@ -37,4 +37,13 @@ L<SCT_validate(3)>,
 L<CT_POLICY_EVAL_CTX(3)>,
 L<SSL_CTX_set_ct_validation_callback(3)>
 
+=head1 COPYRIGHT
+
+Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+
+Licensed under the OpenSSL license (the "License").  You may not use
+this file except in compliance with the License.  You can obtain a copy
+in the file LICENSE in the source distribution or at
+L<https://www.openssl.org/source/license.html>.
+
 =cut