Merge pull request #11 from matsuo/resolve-an-error-detected-by-phpstan

Resolve "Result of method File_IMC_Parse::_convertLineEndings() (void) is used" detected by PHPStan

File/IMC/Parse.php

@@ -160,7 +160,7 @@ public function fromText($text, $charset='UTF-8')
     *
     * @param string $text The string on which to convert line endings.
     *
-    * @return void
+    * @return string|array
     */
     protected function _convertLineEndings($text)
     {