docs: add travis badge

Author: gruhn

README.md

@@ -1,23 +1,20 @@
 <p align="center">
-
   <img src="https://raw.githubusercontent.com/gruhn/vue-qrcode-reader/master/.github/logo.png" alt="Logo" width="240" height="240" style="max-width: 100%;">
-
-  <br>
-  <br>
-
+  
+  <br><br>
+  
   <a href="https://vuejs.org/">
     <img src="https://img.shields.io/badge/vue-2.x-brightgreen.svg" alt="for Vue.js 2">
   </a>
 
-  <a href="https://github.com/semantic-release/semantic-release">
-    <img src="https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg" alt="uses semantic release">
-  </a>
-
   <a href="https://www.npmjs.com/package/vue-qrcode-reader">
     <img src="https://img.shields.io/npm/dm/vue-qrcode-reader.svg" alt="npm monthly downloads">
-    <img src="https://img.shields.io/npm/v/vue-qrcode-reader.svg" alt="npm current version">
   </a>
-
+  
+  <a href="https://travis-ci.org/gruhn/vue-qrcode-reader">
+    <img src="https://travis-ci.org/gruhn/vue-qrcode-reader.svg?branch=master" alt="Travis CI: build status">
+  </a>
+  
   <br>
 
   <img src="https://img.shields.io/badge/Maintained%3F-yes-green.svg" alt="is maintained? yes">
@@ -29,12 +26,22 @@
   <a href="https://github.com/Naereen/badges">
     <img src="https://img.shields.io/badge/badges-awesome-green.svg" alt="badges = awesome">
   </a>
-
+  
   <br>
 
   <a href="https://bundlephobia.com/result?p=vue-qrcode-reader">
     <img src="https://badgen.net/bundlephobia/minzip/vue-qrcode-reader" alt="size minified + gzipped">
   </a>
+  
+  <a href="https://www.npmjs.com/package/vue-qrcode-reader">
+    <img src="https://img.shields.io/npm/v/vue-qrcode-reader.svg" alt="npm current version">
+  </a>
+  
+  <br>
+    
+  <a href="https://github.com/semantic-release/semantic-release">
+    <img src="https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg" alt="uses semantic release">
+  </a>
 </p>
 
 A set of Vue.js components, allowing you to detect and decode QR codes, without leaving the browser.