📝 更新简介

README.md

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 <img alt="Solo" src="https://user-images.githubusercontent.com/873584/52320401-2593e600-2a0a-11e9-9ba1-db79ee71d1af.png">
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-小而美的博客系统，为未来而构建
+小而美的博客系统，专为程序员设计
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