add pure cdn in China

staticfile, a public cdn service in China, powered by Qiniu.
Update customize.handlebars
Update customize.handlebars

remove Staticfile SSL for the file is not hosted in staticfile.org
Merge pull request #167 from Yexiaoxing/patch-1

add pure cdn in China
committed by screwdriver build
Adjust sectionHeading to accept parameters as an object
Issue #170 Clarify grid documentation
Grammar fix for issue #170
sectionHeading fix global scope, lowercase tagName, remove extra typeof checks
In grid documentation wrap references to font-family in {{code}} helper
Cleanup `sectionHeading()` Handlebars helper
committed by screwdriver build
Add MaxCDN which supports SSL

Closes yui/pure#183