Making library compatible above PHP 7.0

Author: vigneshgurusamy

.travis.yml

@@ -3,9 +3,9 @@ language: php
 sudo: false
 
 php:
-    - 5.6
     - 7.0
     - 7.1
+    - 7.2
 
 cache:
   directories:

composer.json

@@ -20,7 +20,7 @@
         }
     ],
     "require": {
-        "php": ">=5.6.4",
+        "php": ">=7.0.0",
         "illuminate/support": "~5.3|~5.4|~5.5",
         "guzzlehttp/guzzle": "~6.0"
     },