include directive in nginx.conf on windows does not work with relative paths

[phaniva]

Current nginx.conf uses relative paths for include directive on line 23. Nginx for windows does not like relative paths for include directive.
As a result of this bug, proxy.conf is not loaded. If the relative paths worked, the include directive would have loaded nginx.conf as well as it resides in the same directory.

[phaniva]

I have a fix for this and would like to submit a PR.

[estenrye]

Feel free to submit a PR, I am currently traveling and will take a look at it when I get back.