Updated gitignore.

Change-Id: Ibbffbf98d90dc7394ed2b3eab29f9b039009d8f2
diff --git a/.gitignore b/.gitignore
index c304b58..0b9a995 100644
--- a/.gitignore
+++ b/.gitignore
@@ -69,3 +69,4 @@
 /src/main/java/de/ids_mannheim/korap/query/serialize/SerializationSandbox.java
 /lib/
 /bin/
+/.settings/