Rails inspired migrations for Kohana

Inspired by

• ActiveRecord
• kohana-migrations

Commands

 install                      
 create <tag name>             - Create a new migration
 up                            - Run all migrations
 up [name]                     - Revert single migration
 down                          - Revert all migrations
 down [name]                   - Revert single migration
 list                          - List all migrations
 help                          - Print this help