플러그인 만들기.

플러그인 시스템 만들기.

<참고>

http://www.ibm.com/developerworks/aix/library/au-cli_plugins/ : cli.zip

http://aroberge.blogspot.kr/2008/12/plugins-part-3-simple-class-based.html

http://docs.qgis.org/testing/en/docs/pyqgis_developer_cookbook/plugins.html