title: Could not find ag-grid-angular/main folder in node_modules
body: <p>We are integrating ag-grid in angular 4
  Below are the dependencies in package.json
  "ag-grid": "10.0.x",
  "ag-grid-angular": "10.0.x"
  did npm install it downloaded above modules without main folder</p>
  
  <p>and from app.module.ts - we have added </p>
  
  <p>import {AgGridModule} from "ag-grid-angular/main"; - in every refereence example we are seeing this line but there is no main folder in library.</p>
  
  <p>error:</p>
  
  <p>"(SystemJS) XHR error (404 Not Found) loading <a href="http://localhost:3000/ag-grid-angular/main" rel="nofollow noreferrer">http://localhost:3000/ag-grid-angular/main</a> </p>
  
  <p>please suggest</p>