Merge pull request #34 from odiel/master

- Moving <style> tag under <head> tag
Merge pull request #35 from odiel/master

Log levels as constants, printing time with logs
多余的 html 标签

多余的 html 标签
Merge pull request #36 from eryx/master

多余的 html 标签
Merge pull request #1 from astaxie/master

Merging