php-cs-fixer: sanitization and nonce verification

Author: hasinur1997

.gitignore

@@ -1,4 +1,6 @@
 /plugin-deploy.sh
 /.gitignore
 node_modules
-build
+build
+phpcs-report.txt
+vendor

assets/js/admin.min.js

@@ -13,5 +13,15 @@
     "require": {
         "php": ">=5.4.0",
         "composer/installers": "~1.0"
-    }
+    },
+
+    "require-dev": {
+        "automattic/vipwpcs": "dev-master",
+        "dealerdirect/phpcodesniffer-composer-installer": "dev-master"
+    },
+   "scripts": {
+        "phpcs": [
+          "phpcs -p -s"
+        ]
+   }
 }