add .travis.yml

.travis.yml

@@ -0,0 +1,17 @@
+language: c
+compiler:
+  - gcc
+  - clang
+before_install:
+  # The travis VMs run on Ubuntu 12.04 which is very old and a huge pain to get
+  # into a state where we can build a recent version of i3status :(.
+  - "echo 'APT::Default-Release \"precise\";' | sudo tee /etc/apt/apt.conf.d/default-release"
+  - "echo 'deb http://archive.ubuntu.com/ubuntu/ utopic main universe' | sudo tee /etc/apt/sources.list.d/utopic.list"
+  - sudo apt-get update
+  - sudo apt-get install -t utopic clang-format-3.5
+  - clang-format-3.5 --version
+install:
+  - sudo apt-get install libconfuse-dev libyajl-dev libasound2-dev libiw-dev asciidoc libcap2-bin
+script:
+  - make -j
+  - clang-format-3.5 -i **/*.[ch] && git diff --exit-code || (echo 'Code was not formatted using clang-format!'; false)