Update composer.json

Author: haphan

composer.json

@@ -5,6 +5,11 @@
             "name": "Jamie Hannaford",
             "email": "jamie.hannaford@rackspace.com",
             "homepage" : "https://github.com/jamiehannaford"
+        },
+        {
+            "name": "Ha Phan",
+            "email": "thanhha.work@gmail.com",
+            "homepage" : "https://github.com/haphan"
         }
     ],
     "autoload": {
@@ -27,9 +32,7 @@
     "require": {
         "php": "~7.0",
         "guzzlehttp/guzzle": "~6.1",
-        "justinrainbow/json-schema": "~1.3",
-        "monolog/monolog": "^1.19",
-        "symfony/var-dumper": "^3.1"
+        "justinrainbow/json-schema": "~1.3"
     },
     "require-dev": {
         "phpunit/phpunit": "~4.0",