Support Launch Storyboard for iPad Pro

[ccorcos]

If you don't use the storyboard launch format, then the iPad Pro build will be scaled up. More info here: http://cordova.apache.org/docs/en/7.x/reference/cordova-plugin-splashscreen/index.html#launch-storyboard-images

[mark-veenstra]

iPhone X compatibility also needs these Launch Storyboard images to get rid of the black bar, see: https://stackoverflow.com/a/46232813/1800695

[ghost]

I added a pull request with the support for these assets.
Pull Request #55

[wesvance]

Any update on this?

[mesqueeb]

Does this npm module already support storyboard splashscreen generation?