Merge pull request #10 from MitchellMcKenna/feature/DOMDocument-loadHTML-empty-string-warning

Fix DOMDocument Empty String PHP Warning

Author: scottmac

OpenGraph.php

@@ -64,7 +64,11 @@ static public function fetch($URI) {
 
         curl_close($curl);
 
-        return self::_parse($response);
+        if (!empty($response)) {
+            return self::_parse($response);
+        } else {
+            return false;
+        }
 	}
 
   /**