Full support for Proxy-Authorization

[stash]

Full support (for both CONNECT and full-url styles) for the Proxy-Authorization header and "Basic" authentication.

[Gamerios]

**Hello,

Thanks but i allways get:**

_http_client.js:53
    throw new TypeError('Request path contains unescaped characters');
    ^

TypeError: Request path contains unescaped characters

**I have read some post and googled and installed tunnel 0.0.4 but also same problem still exists

Hope you or someone can help me ?**