reno/themes/unity/config/wibar_top.json

{ 
    "align": {
        "left": [ 
            { "widget": "widgets.soundclown" }
        ],
        "center": [
            
        ],
        "right": [
            { "widget":"widgets.volume" },
            { "widget": "widgets.notifications",
                "screen": true
            },
            { "widget": "widgets.wallpapers",
                "screen": true,
                "options": {
                    "path": "$HOME/Pictures/Wallpapers"
                }
            },
            { "widget": "widgets.battery" },
            { "widget": "widgets.base.systray" },
            { "widget": "widgets.base.clock" }
        ]
    }
}