Merge pull request #3 from estahn/downgrade_guzzle_stereo

Using guzzle-stero 1.1 since 1.2 is broken and has failing tests

composer.json

@@ -14,7 +14,7 @@
     "minimum-stability": "dev",
     "require": {
         "php": ">=5.6.0",
-        "ikwattro/guzzle-stereo": "^1.1",
+        "ikwattro/guzzle-stereo": "~1.1.0",
         "symfony/dependency-injection": "~2.3|~3.0",
         "symfony/config": "~2.3|~3.0",
         "symfony/http-kernel": "~2.3|~3.0"