proper indentation and syntax

Author: Nyholm

composer.json

@@ -17,7 +17,7 @@
         }
     ],
     "require": {
-        "php":             "^5.5|^7.0",
+        "php": "^5.5 || ^7.0",
         "psr/http-message": "^1.0",
         "psr/cache": "^1.0",
         "php-http/httplug": "^1.0",