Implement httplug

[Hélio Araújo de Oliveira]

Main others api in php uses http://httplug.io as decouple. Just suggestion.

[Alexandru Guzinschi]

Yes, I wanted to do this some time ago and I did some research about this, but HTTPlug was in its early stages and I decided to wait, but in the meantime I totally forgot about it. I guess that now its a good time to revisit the project and see if I can make the switch while keeping BC.

[Hélio Araújo de Oliveira]

I need to be honest, after waiting some months, I tried again and found new errors (and already reported it) but I got faster result just using simple guzzle.

I was trying this package to make my code safe and organized but...

Well, I'm giving up now, anyway, thanks for this job

[Alexandru Guzinschi]

Ah, but you did not have to wait after me. Any good PR is welcome and I will merge it