travis build test 4

Former-commit-id: 6a463a3e0db7a627e3876baf58f59f57d3e08194

.travis.yml

@@ -22,6 +22,14 @@ matrix:
             - libxxf86vm-dev
             - cmake
             - binutils
+            - libx11-dev
+            - mesa-common-dev
+            - libgl1-mesa-dev
+            - libglu1-mesa-dev
+            - libxrandr-dev
+            - libxi-dev
+            - libxmu-dev
+            - libblas-dev
     - os: osx
       compiler: clang
       script:

README.md

@@ -1,4 +1,5 @@
 # libigl - A simple C++ geometry processing library
+[![Build Status](https://travis-ci.org/libigl/libigl.svg?branch=master)](https://travis-ci.org/libigl/libigl)
 
 ![](libigl-teaser.png)