Add bazel standalone build

Change-Id: Ibeb37a710684731fd296c5e9c8592d644ddc692a
diff --git a/.gitignore b/.gitignore
index c27e17f..82aa8e4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,13 @@
 /.project
 /.settings/
 /.watchmanconfig
+/.primary_build_tool
+/bazel-bin
+/bazel-genfiles
+/bazel-out
+/bazel-reviewers
+/bazel-testlogs
+/bazel-high-availability
 /buck-out/
 /bucklets
 /eclipse-out/