Add a badge for bazel build status.
diff --git a/README.md b/README.md
index 80e556b..2c1bce1 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
Protocol Buffers - Google's data interchange format
===================================================
-[](https://travis-ci.org/google/protobuf) [](https://ci.appveyor.com/project/protobuf/protobuf) [](https://grpc-testing.appspot.com/job/protobuf_branch) [](https://grpc-testing.appspot.com/job/protobuf_branch_32)
+[](https://travis-ci.org/google/protobuf) [](https://ci.appveyor.com/project/protobuf/protobuf) [](https://grpc-testing.appspot.com/job/protobuf_branch) [](https://grpc-testing.appspot.com/job/protobuf_branch_32) [](http://ci.bazel.io/job/protobuf/)
Copyright 2008 Google Inc.