Update package.json

Author: Salem

package.json

@@ -24,5 +24,8 @@
     "babel-preset-react": "^6.24.1",
     "webpack": "^4.26.1",
     "webpack-cli": "^3.1.2"
+  },
+  "dependencies": {
+    "prop-types": "^15.6.2"
   }
 }