Update main.js
Update main.js

re-configured to set application extent if specified
Ricardh522/application-boilerplate-js,brudo/application-boilerplate-js,shekhawatravi/application-boilerplate-js,Esri/application-boilerplate-js,brudo/application-boilerplate-js,shekhawatravi/application-boilerplate-js,Ricardh522/application-boilerplate-js,Esri/application-boilerplate-js