How to customize the menu icon

Hi!

You need to hide the text in Storefront, using the following code:

function storefront_menu_name_8429871( $text ) {
return '';
}
add_filter( 'storefront_menu_toggle_text', 'storefront_menu_name_8429871' );

You can use this plugin to add customisations to your Storefront site – https://github.com/woothemes/theme-customisations