Added link to the php trader native repo.

Author: jb-lopez

README.md

@@ -1,7 +1,5 @@
 # PHP Trader Interface
 
-[![Codacy Badge](https://api.codacy.com/project/badge/Grade/221a58d6d99943688ff68ca1141a1c86)](https://www.codacy.com/app/jbspublic/phpTraderInterface?utm_source=github.com&utm_medium=referral&utm_content=LupeCode/phpTraderInterface&utm_campaign=Badge_Grade)
-
 This is an interface to the PHP Trader Extension.
 The PHP Trader Extension is available from <http://pecl.php.net/package/trader>.
 The extension and the source for it can be downloaded there.
@@ -10,6 +8,8 @@ The extension and the source for it can be downloaded there.
 
 This project is just an interface to that extension, and does not work without it.
 
+If you cannot install the PECL extension, try the [PHP Trader Native](https://github.com/LupeCode/phpTraderNative) project instead.
+
 ### Requires PHP 7.0.0 or newer
 
 Variable types are set on all function parameters.