refactor(package): update composer.json and package.json

www/composer.json

 {
-  "authors": [
-    {
-      "name": "Constantine Karnaukhov",
-      "email": "genteelknight@gmail.com"
-    }
-  ],
   "require": {
     "arrilot/bitrix-migrations": "^2.1"
   }

www/package.json

+{
+  "private": true,
+  "devDependencies": {
+    "eslint": "3.15.0"
+  },
+  "scripts": {
+    "lint": "eslint .",
+    "dependencies": "yarn install --no-progress",
+    "build": "echo \"no build specified\""
+  }
+}