Adding "Related pages"

Author: BaseMax

README.md

@@ -16,6 +16,13 @@ composer require firebase/php-jwt
 - Run Encode: `$ php encode.php`
 - Run Decode: `$ php decode.php`
 
+
+### Related pages
+
+- https://jwt.io/
+- https://github.com/firebase/php-jwt
+- https://github.com/cdoco/php-jwt
+
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 # Max Base