Update version number

Author: jbrooksuk

src/Forge.php

@@ -99,7 +99,7 @@ public function setApiKey($apiKey, $guzzle = null)
                 'Authorization' => 'Bearer '.$this->apiKey,
                 'Accept' => 'application/json',
                 'Content-Type' => 'application/json',
-                'User-Agent' => 'Laravel Forge PHP/1.0',
+                'User-Agent' => 'Laravel Forge PHP/3.0',
             ],
         ]);