Resolved the source build issue

Author: PiramanayagamSyncfusion

README.md

@@ -38,7 +38,7 @@ The Syncfusion license that contains the terms and conditions can be found at
 
 ## Installing
 
-Before installation check `@syncfusion:registry=http://nexus.syncfusion.com/repository/ej2-production/` is available in npmrc file. Then use the below command to install all dependent packages.
+Use the below command to install all dependent packages from the public npm registry.
 
 ```bash
 npm install

package.json

@@ -67,9 +67,10 @@
     "webpack": "^4.41.5"
   },
   "scripts": {
+    "gulp": "gulp",
     "serve": "node --max_old_space_size=8192 node_modules/@vue/cli-service/bin/vue-cli-service.js serve",
     "serve: watch": "vue-cli-service serve",
-    "build": "node --max_old_space_size=8192 node_modules/@vue/cli-service/bin/vue-cli-service.js build",
+    "build": "npm run gulp build && node --max_old_space_size=8192 node_modules/@vue/cli-service/bin/vue-cli-service.js build",
     "build-watch": "vue-cli-service build",
     "ci-publish": "gulp publish-samples"
   }