To run and optionally install xsh (XikiShell), just execute the 'xsh' command, located in the 'bin' dir:
$ ./bin/xsh
It may walk you through a couple setup instructions.
You can download Xiki from: https://github.com/trogdoro/xiki/archive/master.tar.gz
Or, if you have git, you can get Xiki from github via "git clone https://github.com/trogdoro/xiki.git"
Supported platforms: MacOS and Linux. Pair with me if you want to see Windows support, support for your text editor, or just to hack on Xiki! (find me at twitter.com/xiki).
Join the google group for help with installing, or to chat about whatever or share your ideas:
http://groups.google.com/group/xiki
Or tweet to @xiki.