Support ver.di in german tokenizer

Change-Id: Ib1e8fd23c8e85c792f0c1da87ce1858d4ce33e78
diff --git a/src/de/plusampersand.txt b/src/de/plusampersand.txt
index 6cbeb97..46a3dbe 100644
--- a/src/de/plusampersand.txt
+++ b/src/de/plusampersand.txt
@@ -633,6 +633,8 @@
 XHTML+SMIL
 Y&R
 Y&T
+ver.di
+Ver.di
 Yin&Yang
 Yotsuba&
 Young&Queer