app/assets/images/favicon/manifest.json.erb
{
"name": "Motta's Cabeleireiros",
"icons": [
{
"src": "<%= asset_path 'favicon/android-chrome-192x192.png' %>",
"sizes": "192x192",
"type": "image\/png"
},
{
"src": "<%= asset_path 'favicon/android-chrome-512x512.png' %>",
"sizes": "512x512",
"type": "image\/png"
}
],
"theme_color": "#941c18",
"display": "standalone"
}