Update: deployment.md

docs/guide/deployment.md

@@ -261,7 +261,82 @@ npm install -g now
 
 ### Heroku
 
-> TODO | Open to contribution.
+Make sure you have [heroku-cli](https://devcenter.heroku.com/articles/heroku-cli#download-and-install) installed
+
+##### Required package
+Install `serve`
+```bash
+yarn add serve
+```
+or
+```bash
+npm install serve
+```
+
+#### Configuration
+- Create `serve.json` file in your project root
+
+```javascript
+// serve.json
+
+{
+  "public": "dist",
+  "rewrites": [
+    {
+      "source": "**",
+      "destination": "/index.html"
+    }
+  ]
+}
+```
+
+- Set `scripts.start` to `npx serve` in package.json
+
+```javascript
+// package.json
+
+{
+  ...
+  "scripts": {
+    "start": "npx serve",
+    ...
+  }
+}
+```
+
+or
+
+- Download [deploy.sh](https://github.com/matscode/deploy-static-sites-with-url-rewrite/blob/master/deploy.sh)
+
+- Set `scripts.start` to `sh deploy.sh` in package.json
+
+```javascript
+// package.json
+
+{
+  ...
+  "scripts": {
+    "start": "sh deploy.sh",
+    ...
+  }
+}
+```
+
+#### Test and|or Deploy
+- Deploy
+```bash
+// test your app locally
+
+heroku local
+```
+or
+
+```bash
+// deploy your app to heroku
+
+git push heroku master
+```
+
 
 ### Surge