I generated a custom icon with the python script of ionicons repo, it seems worked because i see on console.
Save Manifest, Icons: 735
Save Build, Icons: 735
Generate CSS From SCSS
Generate Minified CSS From SCSS
also in the cheatsheet.html I can see my icon, like the others, i copied the files from/to:
ionicons\css -> /www/lib/ionic/css/
ionicons\fonts -> /www/lib/ionic/fonts/
ionicons\scss -> /www/lib/ionic/scss/ionicons/
but when serving the app it display nothing, only a blank space, what else i need to do, to be able to see it?