Added link in exception message

Author: Nyholm

src/ClassDiscovery.php

@@ -71,7 +71,7 @@ protected static function findOneByType($type)
             }
         }
 
-        throw new DiscoveryFailedException('Could not find resource using any discovery strategy', $exceptions);
+        throw DiscoveryFailedException::create($exceptions);
     }
 
     /**

src/Exception/DiscoveryFailedException.php

@@ -12,12 +12,14 @@
 final class DiscoveryFailedException extends \Exception implements Exception
 {
     /**
-     * @var array
+     * @var \Exception[]
      */
     private $exceptions;
 
     /**
-     * @param $exceptions
+     *
+     * @param string $message
+     * @param \Exception[] $exceptions
      */
     public function __construct($message, array $exceptions = [])
     {
@@ -27,7 +29,21 @@ public function __construct($message, array $exceptions = [])
     }
 
     /**
-     * @return array
+     * @param \Exception[] $exceptions
+     */
+    public static function create($exceptions)
+    {
+        $message = 'Could not find resource using any discovery strategy. Find more information at http://docs.php-http.org/en/latest/discovery.html#common-errors';
+        foreach ($exceptions as $e) {
+            $message .= "\n - ".$e->getMessage();
+        }
+        $message.="\n\n";
+
+        return new self($message, $exceptions);
+    }
+
+    /**
+     * @return \Exception[]
      */
     public function getExceptions()
     {