Merge pull request #147 from wuwx/master

使用 Setting.app_name 代替 SITE_NAME
upgrading Rails to 3.2.11

Multiple vulnerabilities in parameter parsing in Action Pack (CVE-2013-0156)
see https://groups.google.com/group/rubyonrails-security/browse_thread/thread/eb56e482f9d21934
Thin version to 1.5.0, before version can't work with Rails 3.2.11.
Remove ree,1.9.2 from travis, don't need.