manifest.xml

<?xml version="1.0" encoding="UTF-8"?>
<OfficeApp
          xmlns="http://schemas.microsoft.com/office/appforoffice/1.1"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xmlns:bt="http://schemas.microsoft.com/office/officeappbasictypes/1.0"
          xsi:type="TaskPaneApp">
  <Id>12345678-1234-1234-1234-123456789012</Id>
  <Version>1.0.0.0</Version>
  <ProviderName>Calendar Add-in</ProviderName>
  <DefaultLocale>en-US</DefaultLocale>
  <DisplayName DefaultValue="Calendar Insert" />
  <Description DefaultValue="Insert calendar tables into OneNote pages"/>
  <IconUrl DefaultValue="https://localhost:3000/assets/icon-32.png" />
  <HighResolutionIconUrl DefaultValue="https://localhost:3000/assets/icon-64.png"/>
  <SupportUrl DefaultValue="https://www.contoso.com/help"/>
  <Hosts>
    <Host Name="Notebook" />
  </Hosts>
  <DefaultSettings>
    <SourceLocation DefaultValue="https://localhost:3000/index.html"/>
  </DefaultSettings>
  <Permissions>ReadWriteDocument</Permissions>
</OfficeApp>