Build language specific tokenizers: de, en

Change-Id: Iedad4d96aa702e173ed98d888685b4dd7b113cd5
diff --git a/.gitignore b/.gitignore
index b5ddfd2..71f01ae 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,8 @@
 .*
 !/.gitignore
 target
-!/target/generated-sources/jflex/de/ids_mannheim/korap/tokenizer/DerekoDfaTokenizer.java
+!target/generated-sources/jflex/de/ids_mannheim/korap/tokenizer/DerekoDfaTokenizer_de.java
+!target/generated-sources/jflex/de/ids_mannheim/korap/tokenizer/DerekoDfaTokenizer_en.java
 tmp
 logs
 cache_store