Please note that this repository is deprecated as of the latest versions of devkitARM and devkitPPC. The Pacman-based package system is far superior.
The repository is kept around, but will only be maintained for platforms not covered by devkitPro and/or for testing work intended to cooperate with devkitPro's official repository.
To use, add utils/ to $PATH. pkg-build [package] should do the rest for you.