Add .DS_Store to gitignore

Signed-off-by: Suhas Hariharan <[email protected]>
Signed-off-by: Gary Kim <[email protected]>

Author: Suhas Hariharan

.gitignore

@@ -4,6 +4,7 @@ firefox_build.zip
 artifacts/
 dist/
 src/web_accessible_resources/libraries.txt
+.DS_Store
 
 # Node
 node_modules/