证书
http://article.yeeyan.org/view/15661/101257
http://xiaolife.com/wordpress/an-introduce-to-iphone-push/
http://cygen.com/productblog/ 对手
http://getsharekit.com/customize/
http://maniacdev.com/2009/10/how-to-make-ultra-slick-gradient-uitableview-cells/
http://www.undefinedvalue.com/2009/08/25/changing-background-color-and-section-header-text-color-grouped-style-uitableview
http://undefinedvalue.com/2009/11/02/easy-gradient-backgrounds-uitextviewcells
http://www.cimgf.com/2009/09/23/uitableviewcell-dynamic-height/
table background
http://getsharekit.com/customize/
button
http://undefinedvalue.com/2010/02/27/shiny-iphone-buttons-without-photoshop
icon set
http://www.idev101.com/icons.html