update dev server docs

Demos.md

@@ -2,6 +2,8 @@
 
 Demos are included in `/demo`:
 
+<br>
+
 **Browser**:
 - `index.html`: Full demo using Browser with ESM module, includes selectable backends and webworkers  
   it loads `dist/demo-browser-index.js` which is built from sources in `demo`, starting with `demo/browser`  
@@ -10,12 +12,28 @@ Demos are included in `/demo`:
 *You can run browser demo either live from git pages, by serving demo folder from your web server or use  
 included micro http2 server with source file monitoring and dynamic rebuild*
 
+<br>
+
 ### Dev Server
 
-To start micro http2 dev server, you must provide your own SSL certificate (production or self-signed)  
-and place them in `dev-server.js`  
+To use dev server, you must have an SSL certificate since browsers enforce *https* for webcam access  
 
-Once SSL certificates have been provided, simply run  
+You can use a provided ones self-signed certificate or configure your own  
+
+Self-signed test certificate was generated using:
+```shell
+openssl req -x509 -newkey rsa:4096 -nodes -keyout dev-server.key -out dev-server.crt -days 365 -subj "/C=US/ST=Florida/L=Miami/O=@vladmandic"
+```
+
+If you want to use your own certificate, edit `dev-server.js`:
+```js
+const options = {
+  key: fs.readFileSync('dev-server/dev-server.key'),
+  cert: fs.readFileSync('dev-server/dev-server.crt'),
+};
+```
+
+Once SSL certificates have been provided (defalt test certificate or your own), simply run  
 ```shell
 npm run dev
 ```  
@@ -38,6 +56,8 @@ found 0 vulnerabilities
 
 *If you want to test `wasm` or `webgpu` backends, enable loading in `index.html`*
 
+<br>
+
 **NodeJS**:
 - `node.js`: Demo using NodeJS with CommonJS module  
   This is a very simple demo as althought `Human` library is compatible with NodeJS execution  

Development-Server.md

@@ -1 +0,0 @@
-Welcome to the human wiki!