Update Readme.md
add book.json. fix generate error
Merge pull request #184 from marchtea/master

add book.json. fix generate error
Update Readme.md
Update Readme.md
Update Readme.md
Update Readme.md
add chapter8.1 教你如何迅速秒杀掉：99%的海量数据处理面试题
update chapter 8.1
add chapter 8.2