Update README.rst

Author: MailboxValidator

README.rst

@@ -23,7 +23,7 @@ Dependencies
 
 An API key is required for this module to function.
 
-Go to `<http://www.mailboxvalidator.com/plans#api>`_ to sign up for a FREE API plan and you'll be given an API key.
+Go to `<https://www.mailboxvalidator.com/plans#api>`_ to sign up for a FREE API plan and you'll be given an API key.
 
 Usage
 =====
@@ -226,4 +226,4 @@ Errors
 Copyright
 =========
 
-Copyright (C) 2017 by MailboxValidator.com, [email protected]
+Copyright (C) 2018 by MailboxValidator.com, [email protected]