Merge pull request #30 from hlee/master

display favor books
Fixed #22
Merge pull request #33 from hlee/master

fixed anonymous user favor
Fixed #33
add auto create book with douban id
完成豆瓣自动上架图书功能
Merge pull request #41 from songjiayang/master

根据豆瓣图书自动上架。。
changed ignorefile added tags
added one more rspec test for like