Update README with local build instructions

README.md

@@ -1,2 +1,26 @@
 # hpsf.io
 HPSF website
+
+## Requirements
+
+- [Install Hugo](https://gohugo.io/installation/) version v0.111.3
+- Need to be connected to internet to load [Hinode theme](https://github.com/gethinode/hinode) dependencies and modules
+- Clone [this repository](https://github.com/hpsfoundation/hpsf.io)
+
+<br />
+
+## How to run locally
+1. Install all requirements
+2. Change directory: `<your-path-to-the-repository>`
+3. Install dependencies
+```
+npm install
+```
+4. Start development server
+```bash
+npm run start
+# or
+hugo server -D
+```
+5. Open Chrome, web server is available at `http://localhost:<assigned-port-depends>`
+    - example: `http://localhost:1313`