Merge pull request #4 from anaptfox/update-guzzle

Update Guzzle to ~6.2

Author: egeriis

composer.json

@@ -20,7 +20,7 @@
     "require": {
         "php": ">=5.6.0",
         "illuminate/contracts": "~5.0",
-        "guzzlehttp/guzzle": "~5.2"
+        "guzzlehttp/guzzle": "~6.2"
     },
     "require-dev": {
         "phpspec/phpspec": "~2.1"