If you are a web developer looking to use LiveReload, you should refer to your LiveReload server/app/tool's documentation, rather that this repository. you can even write your own refer to the LiveReload protocol.The server notifies the client whenever a change is made. When any other file is modified, the page is reloaded.
When a CSS or an image file is modified, it is live-refreshed without reloading the page. The client connects to a LiveReload server via web sockets and listens for incoming change notifications. This repository (livereload.js) implements the client side of the protocol. To use LiveReload, you need a client (this script) in your browser and a server running on your development machine. LiveReload is a tool for web developers and designers.