New HTTP client

[denisdulici]

A chainable, REST Friendly, PHP HTTP client http://phphttpclient.com

[burakcakirel]

Language packages could not download from Crowdin with this implementation.
Here is the return headers:
HTTP/1.1 302 Moved Temporarily Server: nginx Date: Wed, 15 Mar 2017 19:49:21 GMT Content-Type: text/html Transfer-Encoding: chunked Connection: keep-alive Set-Cookie: cid=9k98i7o89k1plqv2p7samb7fe1; expires=Fri, 14-Apr-2017 19:49:21 GMT; path=/; domain=.crowdin.com; HttpOnly Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Location: http://crowdin-packages.s3.amazonaws.com/185701/0/tr.zip?response-content-disposition=attachment%3B%20filename%3D%22tr.zip%22&AWSAccessKeyId=AKIAIGJKLQV66ZXPMMEA&Expires=1489607481&Signature=UwtmWtn0XjYg0d0lOuHArG8xTLY%3D Strict-Transport-Security: max-age=86400

I think we need to add "CURLOPT_FOLLOWLOCATION" option to curl request.
Here is my PR #676