add func Html2str()

Fix a wrong logical for AddFuncMap method.

Fix wrong method name call for FilterPrefixPath.

add fcgi support

Refactor pprof.go to use switch instead of if/else

http support pprof
PprofOn set to true you can profile the runtime data.
template add date func like php's date function

{{date "Y-m-d H:i:s"}}

This was fixed in 5ce009, listening on both ipv6 and ipv4 addresses is not the problem (and I think you should remove the note you added).

Add go syntax hilighting, fix odd wording