add function Nginx.configure for getting arguments-string of ./configure when building nginx
Merge pull request #86 from cubicdaiya/feature/ngx_configure

add function Nginx.configure
Update mruby
check nginx_src dir
Update README.md
use mruby-onig-regexp instead of mruby-hs-regexp
Add proxy on rewrite phase example
Add compatible hello world code between ngx_mruby and mod_mruby
Update README.md
Update README.md
Update README.md
Update README.md
Add some Nginx class const
Fix wrong path for mrbgems
Fix bug about string length
Move document section
Add Nginx::Filter Class
Merge branch 'master' of github.com:matsumoto-r/ngx_mruby
Add mruby_output_filiter{,_code} directives

- remove all header_filter functions
- remove some body_filter functions
- remove ngx_mrb_run_body_filter()
Fix bud; call file code at inline code phase