Merge branch 'dev'
add func
添加简单的密码加密函数

密码为已经md5加密过的进行2次加密
cookie添加密码
cookie添加用户id
update weibo_show class

完成头像和screen_name获取函数
add get_gravatar func
dev new pw
显示微博用户头像和screen_name
ui调整
Merge branch 'dev' into nightly
Merge branch 'master' into nightly
Merge pull request #17 from orvice/nightly

Nightly
Merge pull request #18 from orvice/dev

Dev