add travis CI badge

README.md

@@ -1,7 +1,10 @@
 IPFS API wrapper library in JavaScript
 ======================================
 
-[![](https://img.shields.io/badge/made%20by-Protocol%20Labs-blue.svg?style=flat-square)](http://ipn.io) [![](https://img.shields.io/badge/project-IPFS-blue.svg?style=flat-square)](http://ipfs.io/) [![](https://img.shields.io/badge/freejs-%23ipfs-blue.svg?style=flat-square)](http://webchat.freenode.net/?channels=%23ipfs) [![Dependency Status](https://david-dm.org/ipfs/js-ipfs-api.svg?style=flat-square)](https://david-dm.org/ipfs/js-ipfs-api) [![Circle CI](https://circleci.com/gh/ipfs/js-ipfs-api.svg?style=svg)](https://circleci.com/gh/ipfs/js-ipfs-api)
+[![](https://img.shields.io/badge/made%20by-Protocol%20Labs-blue.svg?style=flat-square)](http://ipn.io) [![](https://img.shields.io/badge/project-IPFS-blue.svg?style=flat-square)](http://ipfs.io/) [![](https://img.shields.io/badge/freejs-%23ipfs-blue.svg?style=flat-square)](http://webchat.freenode.net/?channels=%23ipfs)
+[![Dependency Status](https://david-dm.org/ipfs/js-ipfs-api.svg?style=flat-square)](https://david-dm.org/ipfs/js-ipfs-api)
+[![Travis CI](https://travis-ci.org/ipfs/js-ipfs-api.svg?branch=master)](https://travis-ci.org/ipfs/js-ipfs-api)
+[![Circle CI](https://circleci.com/gh/ipfs/js-ipfs-api.svg?style=svg)](https://circleci.com/gh/ipfs/js-ipfs-api)
 
 > A client library for the IPFS API.
 
@@ -68,7 +71,7 @@ array of files can be used.
 ```javascript
 ipfs.add(files, function(err, res) {
     if(err || !res) return console.error(err)
-    
+
     res.forEach(function(file) {
         console.log(file.Hash)
         console.log(file.Name)
@@ -111,7 +114,7 @@ Retrieve the contents of a single hash, or array of hashes.
 ```javascript
 ipfs.cat(hashs, function(err, res) {
     if(err || !res) return console.error(err)
-    
+
     if(res.readable) {
         // Returned as a stream
         res.pipe(process.stdout)
@@ -138,7 +141,7 @@ Get the node structure of a hash. Included in it is a hash and array to links.
 ```javascript
 ipfs.ls(hashs, function(err, res) {
     if(err || !res) return console.error(err)
-    
+
     res.Objects.forEach(function(node) {
         console.log(node.Hash)
         console.log("Links [%d]", node.Links.length)
@@ -158,7 +161,7 @@ curl "http://localhost:5001/api/v0/ls?arg=<hash>&stream-channels=true"
 ```js
 {
     Objects: [
-        { 
+        {
             Hash: string,
             Links: [{
                 Name: string,