{
    "manifestVersion": 1,
    "id": "samples-public-events",
    "version": "0.1.0",
    "name": "Team Calendar US Public Events (Sample)",
    "description": "See public United States events and holidays on the Team Calendar extension for Visual Studio Online.",
    "baseUri": "https://localhost",
    "publisher": "YOUR PUBLISHER HERE",
    "icons": {
        "wide": "images/fabrikam-logo.png",
        "default": "images/fabrikam-logo.png"
    },
    "tags": [
        "Sample"
    ],
    "categories": [
        "Planning"
    ],
    "contributions": [
        {
            "id": "publicEvents",
            "targets": [
                "ms.team-calendar.calendar"
            ],
            "type": "ms.vss-web.service",
            "properties": {
                "uri": "out/main.html"
            }
        }
    ]
}
{
    "manifestVersion": 1.0,
    "id": "samples-public-events",
    "version": "0.1.0",
    "name": "Team Calendar US Public Events (Sample)",
    "description": "See public United States events and holidays on the Team Calendar extension for Visual Studio Online.",
    "baseUri": "https://localhost",
    "publisher": "YOUR PUBLISHER HERE",
    "icons": {
        "wide": "images/fabrikam-logo.png",
        "default": "images/fabrikam-logo.png"
    },
    "tags": [
        "Sample"
    ],
    "categories": [
        "Planning"
    ],
    "contributions": [
        {
            "id": "publicEvents",
            "type": "ms.vss-web.service",
            "description": "Team Calendar event source for public U.S. events and holidays.",
            "targets": [
                "ms.team-calendar.calendar-event-sources"
            ],
            "properties": {
                "uri": "out/main.html"
            }
        }
    ]
}

Update contribution descriptions in public-events sample
Update contribution descriptions in public-events sample