Update composer.json

Author: amosmos

composer.json

@@ -20,7 +20,7 @@
     ],
     "require": {
         "php" : "^7.0",
-        "rocket-code/shopify": "~2.0"
+        "rocket-code/shopify": "^2.0"
     },
     "autoload": {
         "psr-4": {
@@ -37,4 +37,4 @@
             ]
         }
     }
-}
+}