add comment in config package.
Added LayoutSections property to Controller
users can define 0 or multipe sections in the Layout template file so all kinds of content such as scripts, css can go to proper sections in the generated html file.
add comments in cache package
add api comments in file memzipfile.go,reload.go,router.go,template.go and templatefunc.go
…atefunc.go, fix spelling error GetInitListner as GetInitListener.
repaired the wrong IP when using in localhost (Mac os x)