Package description
===================

Directory: /pkgs/[package]/
- [package] is a simple package name, 
  should not contain special characters including space

Files inside the directory:
- source: e.g. kambing.ui.edu::ubuntu/     (mandatory)
- target: e.g. /var/www/ubuntu/            (mandatory)
- name: e.g. Ubuntu Linux
- cron: e.g. 0 0 * * *                     (mandatory)
- method: e.g. rsync.debian                (mandatory)
  - available methods: see bin/get.[methodname]