Add instructions

Author: yuchi

README.md

@@ -1,3 +1,23 @@
 # tiforward.github.io
 
-[![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/TiForward/tiforward.github.io?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/TiForward/tiforward.github.io?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
+### Building (for development)
+
+```bash
+$ git clone git@github.com:TiForward/tiforward.github.io.git
+$ cd tiforward.github.io
+$ npm install
+$ [sudo] npm install --global gulp
+$ gulp serve # Will open the browser in live-reload
+```
+
+### Deploying
+
+```bash
+$ git clone git@github.com:TiForward/tiforward.github.io.git
+$ cd tiforward.github.io
+$ npm install
+$ [sudo] npm install --global gulp
+$ gulp deploy # Will push to gh-pages
+```