add http parse specified code.
refactor connection.c, move http process specified code out to http_request.c, so that module_uwsgi can reuse.
add development update information in README
support uswgi, but cannot run the function correctly, need to fix the remain bugs.
fix bug of datasize error in uwsgi, now we can run the converse with the blog engine.
update 0.2 spec
update config file
Merge branch 'refactor_request' into develop

Conflicts:
	src/connection.c
	src/http.h
	src/http_parse.c
	src/module_default.c
	src/module_uwsgi.c
	src/utils.c
	modified:   http.h
	modified:   module_default.c
	modified:   module_uwsgi.c
	modified:   utils.c
	modified:   connection.c
	modified:   http.h
	modified:   module_uwsgi.c