One gotcha that I found, hope its included in the readme

To change your nativescript id/ bundle id/ android package name, you need to:

• go to build > prepare.js then change the APP_ID to your package name.
• go to src > resources > Android >app.gradle change the applicationId to your package name
• delete the dist folder if it exists (this will cause a full rebuild of the project when you do the next step)
• run npm run tns -- run android