Add first Requests HTTP client implementation

[Afterster]

My project cannot have strong dependency with cUrl and because of that I created a new transport layer which use Requests project (http://requests.ryanmccue.info/), using cUrl or fsockopen according to what available.

[bshaffer]

This is interesting... the advantage is Requests uses fsockopen, and this is required for your project?

I think this may be something better suited for your own application. I do not see this being widely useful

[Afterster]

Yes Requests is required by my project. But there is no much http framework in php (the other popular one I can think of is Guzzle). In the same time it avoids curl strong dependency on your project.
I found that useful for everyone, moreover you already have the http client abstraction layer, it's why I proposed the pull request. Your choice ;)