fix(package.json): change package.json to properly define resources
fix(package.json): change package.json to properly define resources

Fixes: https://github.com/aurelia/ui-virtualization/issues/76
Properly defined resources are now included in the package.json file.

AStoker/ui-virtualization,aurelia/ui-virtualization,aurelia/ui-virtualization,AStoker/ui-virtualization