Improve the performance for https proxy
Add timeout handler for both request and response
Add regular expression support in responder
Support HTTPS
Support directory mapping with any files
Support reapplying rule after it has been modified without restart the proxy
fix [connection timeout error](https://github.com/goddyZhao/nproxy/issues/4)
bug fix
[+] support string pattern
[+] support map server images directory to local one
[&] change the color of info level log to blue