Myself and a number of my coworkers have installed it. You basically just need to clone it into a folder called ZenCoding inside of your Packages folder. You can find the Packages folder by going to the Preferences > Browse Packages… menu entry.

The alternative is using the package manager I wrote http://wbond.net/sublime_packages/package_control. This also gives you the benefit of automatic updates and a whole bunch of other packages at your fingertips.

Package Control is very cool, thanks for creating it. As an author of a Sublime plugin (https://github.com/alexstaubo/sublime_text_alternative_autoc...), how do I submit that package to the list fetched with "Discover Packages"? Do I add the binary package file to my Github repo, and then ask you to add it to the official package repository?

You can fork the package_control_channel on GitHub (https://github.com/wbond/package_control_channel) or BitBucket (https://bitbucket.org/wbond/package_control_channel) and send a pull request. That or you can email me.

You don't need to create a binary package file as Package Control can work directly with GitHub and BitBucket. Simply add the regular https URL to your repository.

Ah, excellent. I went for the pull request method.