Add Guzzle to composer setup.

composer.json

@@ -21,7 +21,8 @@
         "php": ">=5.5.0",
         "ext-pdo": "*",
         "ext-curl": "*",
-        "monolog/monolog": "^1.19"
+        "monolog/monolog": "^1.19",
+        "guzzlehttp/guzzle": "~6.0"
     },
     "autoload": {
         "psr-4": {

composer.lock

@@ -4,9 +4,180 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "49fc795b5cdb1b689416910c6bed4023",
-    "content-hash": "b0ad7b5aff6fea3eb03b195779708bda",
+    "hash": "3d67bf3fdb85b051d8f76a6098654143",
+    "content-hash": "e896da909d596879e7fcf1a2b7898113",
     "packages": [
+        {
+            "name": "guzzlehttp/guzzle",
+            "version": "6.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/guzzle/guzzle.git",
+                "reference": "d094e337976dff9d8e2424e8485872194e768662"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/d094e337976dff9d8e2424e8485872194e768662",
+                "reference": "d094e337976dff9d8e2424e8485872194e768662",
+                "shasum": ""
+            },
+            "require": {
+                "guzzlehttp/promises": "~1.0",
+                "guzzlehttp/psr7": "~1.1",
+                "php": ">=5.5.0"
+            },
+            "require-dev": {
+                "ext-curl": "*",
+                "phpunit/phpunit": "~4.0",
+                "psr/log": "~1.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "6.2-dev"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "src/functions_include.php"
+                ],
+                "psr-4": {
+                    "GuzzleHttp\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Michael Dowling",
+                    "email": "mtdowling@gmail.com",
+                    "homepage": "https://github.com/mtdowling"
+                }
+            ],
+            "description": "Guzzle is a PHP HTTP client library",
+            "homepage": "http://guzzlephp.org/",
+            "keywords": [
+                "client",
+                "curl",
+                "framework",
+                "http",
+                "http client",
+                "rest",
+                "web service"
+            ],
+            "time": "2016-03-21 20:02:09"
+        },
+        {
+            "name": "guzzlehttp/promises",
+            "version": "1.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/guzzle/promises.git",
+                "reference": "c10d860e2a9595f8883527fa0021c7da9e65f579"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/guzzle/promises/zipball/c10d860e2a9595f8883527fa0021c7da9e65f579",
+                "reference": "c10d860e2a9595f8883527fa0021c7da9e65f579",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.5.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "GuzzleHttp\\Promise\\": "src/"
+                },
+                "files": [
+                    "src/functions_include.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Michael Dowling",
+                    "email": "mtdowling@gmail.com",
+                    "homepage": "https://github.com/mtdowling"
+                }
+            ],
+            "description": "Guzzle promises library",
+            "keywords": [
+                "promise"
+            ],
+            "time": "2016-05-18 16:56:05"
+        },
+        {
+            "name": "guzzlehttp/psr7",
+            "version": "1.3.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/guzzle/psr7.git",
+                "reference": "31382fef2889136415751badebbd1cb022a4ed72"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/guzzle/psr7/zipball/31382fef2889136415751badebbd1cb022a4ed72",
+                "reference": "31382fef2889136415751badebbd1cb022a4ed72",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.4.0",
+                "psr/http-message": "~1.0"
+            },
+            "provide": {
+                "psr/http-message-implementation": "1.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "GuzzleHttp\\Psr7\\": "src/"
+                },
+                "files": [
+                    "src/functions_include.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Michael Dowling",
+                    "email": "mtdowling@gmail.com",
+                    "homepage": "https://github.com/mtdowling"
+                }
+            ],
+            "description": "PSR-7 message implementation",
+            "keywords": [
+                "http",
+                "message",
+                "stream",
+                "uri"
+            ],
+            "time": "2016-04-13 19:56:01"
+        },
         {
             "name": "monolog/monolog",
             "version": "1.19.0",
@@ -85,6 +256,55 @@
             ],
             "time": "2016-04-12 18:29:35"
         },
+        {
+            "name": "psr/http-message",
+            "version": "1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-message.git",
+                "reference": "85d63699f0dbedb190bbd4b0d2b9dc707ea4c298"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/http-message/zipball/85d63699f0dbedb190bbd4b0d2b9dc707ea4c298",
+                "reference": "85d63699f0dbedb190bbd4b0d2b9dc707ea4c298",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Http\\Message\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for HTTP messages",
+            "keywords": [
+                "http",
+                "http-message",
+                "psr",
+                "psr-7",
+                "request",
+                "response"
+            ],
+            "time": "2015-05-04 20:22:00"
+        },
         {
             "name": "psr/log",
             "version": "1.0.0",