Adding files to .gitignore

Change-Id: I074abb52d4b07eb283ffee1d96c8facad2c2c2ed
diff --git a/.gitignore b/.gitignore
index 853a58d..e3c60a7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 .idea/
+.DS_Store
 .tmp/
 .gitreview
 docs/_book/
@@ -7,4 +8,4 @@
 dist/
 node_modules/
 npm-debug.log
-typings/
\ No newline at end of file
+typings/