Addon

There is an addon for Firefox in addon/.

This isn't intended to be the "normal" way anyone uses TogetherJS, but it is a development tool to try TogetherJS out on a site that hasn't integrated togetherjs-min.js itself. When you activate the addon (via a link in the Add-On Toolbar) it simply adds togetherjs-min.js to every page in that tab (until you close the tab or turn it off). Also if you open a link with #&togetherjs=... (the code used in the share link) it will automatically turn TogetherJS on for the tab.

Installing

A simple way to install is simply to click this link in Firefox, and install the addon. You can turn the addon on or off via the addon manager. No restart is required.

Building

You can build the addon using the Addon-SDK. Once you've installed the SDK, go into the addon/ directory and run cfx xpi to create an XPI (packaged addon file) or cfx run to start up Firefox with the addon installed (for development).