Improves #3 Support class names containing "_"

Author: mnapoli

src/PhpDocReader/PhpDocReader.php

@@ -75,7 +75,7 @@ public function getPropertyClass(ReflectionProperty $property)
         }
 
         // Ignore types containing special characters ([], <> ...)
-        if (! preg_match('/^[a-zA-Z0-9\\\\]+$/', $type)) {
+        if (! preg_match('/^[a-zA-Z0-9\\\\_]+$/', $type)) {
             return null;
         }
 
@@ -183,7 +183,7 @@ public function getParameterClass(ReflectionParameter $parameter)
         }
 
         // Ignore types containing special characters ([], <> ...)
-        if (! preg_match('/^[a-zA-Z0-9\\\\]+$/', $type)) {
+        if (! preg_match('/^[a-zA-Z0-9\\\\_]+$/', $type)) {
             return null;
         }