Merge pull request #111 from constantcontact/development

Less constrained versioning for Guzzle

Author: WoogieNoogie

composer.json

@@ -8,7 +8,7 @@
     "require": {
         "php": ">=5.4.0",
         "ext-curl": "*",
-        "guzzlehttp/guzzle": "5.1.0"
+        "guzzlehttp/guzzle": "^5.1.0"
     },
     "require-dev": {
         "phpunit/phpunit": "4.4.1"
@@ -25,4 +25,4 @@
             "Ctct": "src"
         }
     }
-}
+}