Add example to integrate ESLint import plugin

[LostCrew]

ESLint import plugin is very commonly used in medium/big size projects. Aliases should be configured so that cesium/* maps to node_modules/cesium/Source/* (as it's done for the Webpack config) and the import plugin ceases to return errors.
Are contributions accepted?

[ggetz]

Hi @LostCrew, yes contributions are welcome! We would ask you add a section to README.md rather than the config file itself, as the goal is to leave the config file as minimal as possible.

[tkazik]

Thanks to @LostCrew 's comment, I was able to get IntelliSense working with webpack. The config looks like this:

Hope this helps someone in the future...thank you!