install metaboard.

    http://metalab.at/wiki/Metaboard

def install_metaboard(
    replace_existing=False,
):
    """install metaboard.

    http://metalab.at/wiki/Metaboard

    """
    metaboard = AutoBunch()
    metaboard.name = 'Metaboard'

    metaboard.upload.protocol = 'usbasp'
    metaboard.upload.maximum_size = '14336'
    metaboard.upload.speed = '19200'

    metaboard.build.mcu = 'atmega168'
    metaboard.build.f_cpu = '16000000L'
    metaboard.build.core = 'arduino'

    metaboard.upload.disable_flushing = 'true'

    board_id = 'metaboard'

    install_board(board_id, metaboard, replace_existing=replace_existing)