Merge pull request #11 from walu/master

merge with walu
alter weibo site
Merge branch 'master' of https://github.com/wenjun1055/phpbook

Conflicts:
	contributor.md
alter weibo site
Merge pull request #12 from walu/master

merge with walu
add blog url
fix blank space bug
Merge pull request #44 from wenjun1055/master

fix some bug