WebRTC requires you to serve your files from a webserver, so you can just open the HTML in the browser. Here are a few simple ways to get these demos running.
From the root director of this project, run this command from the command line:
python -m SimpleHTTPServer 8080
This will start a web in the directory and server all folder under it.
Install the http-server module
(sudo) npm install -g http-server
From the root director of this project, run this command from the command line:
http-server -p 8080
This will start a web in the directory and server all folder under it.