Revive -d option to dump vecs as ascii file

Change-Id: Ib78b6ad00af74aaf410544f8c872ac6cf67e90e8
diff --git a/Makefile.PL b/Makefile.PL
index 96bcd3f..8d5319d 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -12,6 +12,7 @@
     LICENSE        => 'apache',
     BUILD_REQUIRES => {
      'Test::More' => 0,
+     'Test::TempFile' => 0,
      "REST::Client" => 0,
      "Data::Dump" => 0,
     },