add travis CI

Author: duchangyu

.travis.yml

@@ -0,0 +1,5 @@
+language: node_js
+node_js:
+  - "0.12"
+  - "0.11"
+  - "0.10"

README.md

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 # Autodesk View and Data API Node.js Basic Sample
 
 
+[![build status](https://api.travis-ci.org/Developer-Autodesk/workflow-node.js-view.and.data.api.png)](https://travis-ci.org/Developer-Autodesk/workflow-node.js-view.and.data.api)
+
+
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 ## Description
 A sample demonstrating how to view a model in a web application with the Autodesk View & Data API. This web application has a basic Node.js 
 server and JavaScript/HTML5 client. This sample does not demonstrate how to upload a model to the Autodesk server for translation. See instructions below