Add travis.yml

From #312

.travis.yml

@@ -0,0 +1,22 @@
+sudo: required
+services:
+  - docker
+
+env:
+    global:
+        - DOCKER_VERSION=1.10.1-0~trusty
+
+before_install:
+  # list docker-engine versions
+  - apt-cache madison docker-engine
+  # upgrade docker-engine to specific version
+  - sudo apt-get -o Dpkg::Options::="--force-confnew" install -y docker-engine=${DOCKER_VERSION}
+  - docker version
+  - docker info
+  - sudo add-apt-repository ppa:duggan/bats --yes
+  - sudo apt-get update -qq
+  - sudo apt-get install -qq bats
+  - make update-dependencies
+
+script:
+  - make test

README.md

@@ -1,4 +1,4 @@
-![nginx 1.9.12](https://img.shields.io/badge/nginx-1.9.12-brightgreen.svg) ![License MIT](https://img.shields.io/badge/license-MIT-blue.svg) [![Build](https://circleci.com/gh/jwilder/nginx-proxy.svg?&style=shield&circle-token=2da3ee844076a47371bd45da81cf27409ca7306a)](https://circleci.com/gh/jwilder/nginx-proxy)
+![nginx 1.9.12](https://img.shields.io/badge/nginx-1.9.12-brightgreen.svg) ![License MIT](https://img.shields.io/badge/license-MIT-blue.svg) [![Build](https://circleci.com/gh/jwilder/nginx-proxy.svg?&style=shield&circle-token=2da3ee844076a47371bd45da81cf27409ca7306a)](https://circleci.com/gh/jwilder/nginx-proxy) [![Build Status](https://travis-ci.org/jwilder/nginx-proxy.svg?branch=master)](https://travis-ci.org/jwilder/nginx-proxy)
 
 nginx-proxy sets up a container running nginx and [docker-gen][1].  docker-gen generates reverse proxy configs for nginx and reloads nginx when containers are started and stopped.