Add .DS_Store to .gitignore

Change-Id: I96cc6399fcf28af8f915a65e818b1d4e94b4993f

.gitignore

diff --git a/.gitignore b/.gitignore
index 8eb7d75..da453c5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+.DS_Store
 .idea
 target/
 .classpath