Just download the files (see the git clone command tip from github) and use the Makefiles present.
All the files here are released under the FreeBSD license (see LICENSE file or http://www.freebsd.org/copyright/freebsd-license.html for the original text).
The file ozvim.zip, containing a sample .vimrc and syntax files for oz with vim was found on the web and is just put there for the sake of convenience.