Add travis

.travis.yml

@@ -0,0 +1,32 @@
+dist: trusty
+sudo: false
+language: rust
+rust:
+- nightly
+- beta
+- stable
+addons:
+  apt:
+    packages:
+    - libasound2-dev
+    - libgdk-pixbuf2.0-dev
+    - libglib2.0-dev
+    - libgtk-3-dev
+    - libnotify-dev
+    - libx11-dev
+    - pkg-config
+before_script:
+- |
+  pip install 'travis-cargo<0.2' --user &&
+  export PATH=$HOME/.local/bin:$PATH
+script:
+- |
+  travis-cargo build
+  # travis-cargo test &&
+  # travis-cargo --only stable doc
+# after_success:
+# - travis-cargo --only stable doc-upload
+# env:
+  # global:
+  # - TRAVIS_CARGO_NIGHTLY_FEATURE=""
+  # - secure:

README.md

@@ -1,3 +1,4 @@
+[![Build Status](https://travis-ci.org/hasufell/pnmixer-rust.svg)](https://travis-ci.org/hasufell/pnmixer-rust)
 [![Join the chat at https://gitter.im/hasufell/pnmixer-rust](https://badges.gitter.im/hasufell/pnmixer-rust.svg)](https://gitter.im/hasufell/pnmixer-rust?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 [![License](https://img.shields.io/github/license/hasufell/pnmixer-rust.svg)](https://github.com/hasufell/pnmixer-rust)