Angular scaffolding has error in polyfill.ts

[bic742]

Description

When executing the jss create command for angular, the resulting scaffolded site will not immediately start. This is caused by a bad module reference in the polyfill.ts file.

Expected behavior

After executing the jss create command with angular as the chose framework, the site should start.

Steps To Reproduce

1. Execute command jss create the-app angular
2. cd into new app directory
3. Execute command jss start
4. Site will not start due to bad reference in polyfill.ts

Possible Fix

On line 41-42 of https://github.com/Sitecore/jss/blob/dev/samples/angular/src/polyfills.ts, replace 'es6' with just 'es'.

[sc-illiakovalenko]

@bic742 Thank you, for your request.
Fixed in #320