Merge pull request #6 from imgix/6-travis-ci

Install Travis-CI

.gitignore

@@ -0,0 +1 @@
+vendor/

.travis.yml

@@ -0,0 +1,6 @@
+language: php
+php:
+- '5.5'
+- '5.4'
+install:
+  - composer install

README.md

@@ -1,5 +1,7 @@
 ![imgix logo](https://assets.imgix.net/imgix-logo-web-2014.pdf?page=2&fm=png&w=200&h=200)
 
+[![Build Status](https://travis-ci.org/imgix/imgix-php.png?branch=master)](https://travis-ci.org/imgix/imgix-php)
+
 A PHP client library for generating URLs with imgix. imgix is a high-performance
 distributed image processing service. More information can be found at
 [http://www.imgix.com](http://www.imgix.com).  
@@ -123,4 +125,4 @@ instead. For example:
     // http://demos-1.imgix.net/bridge.png?h=100&w=100
     // http://demos-2.imgix.net/bridge.png?h=100&w=100
     // http://demos-3.imgix.net/bridge.png?h=100&w=100
-    // http://demos-1.imgix.net/bridge.png?h=100&w=100
+    // http://demos-1.imgix.net/bridge.png?h=100&w=100