Add eclipse-out to .gitignore

Change-Id: Ib2e303c3ce21e6dafd4d34df66ca14038b0e37d8
diff --git a/.gitignore b/.gitignore
index 2d5e737..14218e5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,4 @@
 /.settings
 /.primary_build_tool
 /bazel-*
+/eclipse-out