参数说明：
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USAGE:
spider -h <help> -a <all> -q <search>
Arguments:
         -a <download all site images>
         -q <query the image with keywords>
         -h <display help text, just this>
Option Arguments:
         -p <image download path>
         -s <site url eg: http://www.xiurenji.vip (no last backslash "/")>
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