Merge pull request #33 from genewoo/master

Rake 用法
Merge pull request #34 from genewoo/master

move to https, since page only support https type sub modules
disable submodule
reenable submodule
disable submodule, which doesn't work for me so far
manual add slide as sub pages
Create a new post "为Shanghai Ruby User Group创建了一个Twitter同步账号"
Merge pull request #35 from bachue/new_post-new-twitter-account-for-shruby

Create a new post "为Shanghai Ruby User Group创建了一个Twitter同步账号"
RSS update at 09/30/2013 by zhour6
Merge pull request #36 from bachue/master

生成新的rss.xml给《为 Shanghai Ruby User Group 创建了一个 Twitter 同步账号》