App icon doesn't work in gtunt-ionic project

Hi @Diego and Thank you for your stunning grunt ionic generator!!!
I’m trying to load my custom app icon but it doesn’t work!
i simply copy my icons in ->projectFolder->ionic->icons->ios

Maybe i have to copy images in app folder?

i have this config.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> Ionic A sample Apache Cordova application that responds to the deviceready event. Apache Cordova Team

Thank you.
Tommaso.

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