build: Add Travis CI

Author: Andrey Okonetchnikov

.travis.yml

@@ -0,0 +1,6 @@
+language: node_js
+cache:
+  directories:
+    - node_modules
+node_js:
+  - 9

README.md

@@ -1,5 +1,7 @@
 # ejs-loader for webpack
 
+[![Build Status](https://travis-ci.org/okonet/ejs-loader.svg)](https://travis-ci.org/okonet/ejs-loader)
+
 EJS (Underscore/LoDash Templates) loader for [webpack](http://webpack.github.io/). Uses [lodash template](http://lodash.com/docs#template) function to compile templates.
 
 If you are looking for the loader which uses [EJS templating engine](https://github.com/tj/ejs), there is [ejs-compiled-loader](https://github.com/bazilio91/ejs-compiled-loader)