#63 Ensure templated files are writeable and set...

#63 Ensure templated files are writeable and set them read-only afterwards if they don't go into git, as they will be overwritten next time

src/Handler.php

@@ -447,7 +447,9 @@ class Handler extends BaseHandler {
         if (empty($def['add2git'])) {
           $this->gitIgnore($filename);
         }
-        $fs->chmod($file, 0664);
+        if (file_exists($file)) {
+          $fs->chmod($file, 0664);
+        }
         file_put_contents($file, $rendered);
         if (empty($def['add2git'])) {
           $fs->chmod($file, 0444);