Try to fix travis-ci on OSX.
diff --git a/.travis.yml b/.travis.yml
index a45ba7a..e953db3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,6 +12,6 @@
 
 script:
   - cmake --version
-  - cmake -H. -Bbuild
+  - mkdir build && cd build && cmake ..
   - cmake --build build --target all
   - CTEST_OUTPUT_ON_FAILURE=1 cmake --build build --target test
diff --git a/README.md b/README.md
index 4cff8c8..09fda56 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# cpu features
+# cpu features [![Build Status](https://travis-ci.org/google/cpu_features.svg?branch=master)](https://travis-ci.org/google/cpu_features)
 
 A cross platform C89 library to get cpu features at runtime.