Bumped Composer version

Author: dmhendricks

composer.json

@@ -25,7 +25,7 @@
     "tareq1988/wordpress-settings-api-class": "dev-master",
     "dmhendricks/wordpress-toolkit": "dev-master",
     "inc2734/wp-customizer-framework": "^2.3",
-    "composer/installers": "^1.4.0"
+    "composer/installers": "^1.5.0"
   },
   "minimum-stability": "dev",
   "autoload": {