Added test for script calls

Change-Id: I3f2f02257ca54c83b470cfe4b531069a44ed9739
diff --git a/MANIFEST b/MANIFEST
index 9911feb..d1d8c24 100755
--- a/MANIFEST
+++ b/MANIFEST
@@ -97,6 +97,7 @@
 t/sgbr/meta_ids.t
 t/sgbr/pos.t
 t/sgbr/token.t
+t/script/single.t
 t/corpus/archive.zip
 t/corpus/BZK/header.xml
 t/corpus/GOE/header.xml