Add example folder to test the plugin

Author: Turbo87

example/.gitignore

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+bundle.js

example/entry.js

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+document.write("It works.");

example/package.json

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+{
+  "name": "webpack-notifier-example",
+  "author": "Tobias Bieniek <tobias.bieniek@gmx.de>",
+  "license": "ISC",
+  "scripts": {
+    "watch": "webpack -w"
+  },
+  "devDependencies": {
+    "webpack": "^1.5.3"
+  },
+  "private": true
+}

example/webpack.config.js

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+var WebpackNotifierPlugin = require('..');
+
+module.exports = {
+    entry: "./entry.js",
+    output: {
+        path: __dirname,
+        filename: "bundle.js"
+    },
+    plugins: [
+        new WebpackNotifierPlugin(),
+    ]
+};