Update README.md for showing Travis CI (#69)

* also fix the .travis.yml itself so the CI can actually run
diff --git a/.travis.yml b/.travis.yml
index e5bafee..b718e44 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -28,7 +28,7 @@
 install:
   - go get -u github.com/bazelbuild/buildifier/buildifier
 
-  script:
+script:
   # Check that our direct testing passes.
   # The tests takes long to finish and currently we cover bazel tests in Bazel CI
   # TODO: add tests cannot be run by bazel here
diff --git a/README.md b/README.md
index 20d57a2..a0cfaad 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,6 @@
-[![Build status](https://badge.buildkite.com/940075452c1c5ff91dc832664c4c8f05e6ec736916688cd894.svg)](https://buildkite.com/bazel/bazel-toolchains-postsubmit)
+Travis CI | Bazel CI
+:---: | :---:
+[![Build Status](https://travis-ci.org/bazelbuild/bazel-toolchains.svg?branch=master)](https://travis-ci.org/bazelbuild/bazel-toolchains) | [![Build status](https://badge.buildkite.com/940075452c1c5ff91dc832664c4c8f05e6ec736916688cd894.svg)](https://buildkite.com/bazel/bazel-toolchains-postsubmit)
 
 # bazel-toolchains