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" 
  xsi:type="MailApp">
  <Id>2E316C2D-D805-48A2-9824-B088FF546BE9</Id>
  <Version>1.0.0.0</Version>
  <ProviderName>CrazyHacks</ProviderName>
  <DefaultLocale>en-US</DefaultLocale>
  <DisplayName DefaultValue="Team Lunch" />
  <Description DefaultValue="Team Lunch - Let's eat together !" />
  <IconUrl DefaultValue="https://devexhack.azurewebsites.net/teamlunchlogo.png"></IconUrl>
  <Hosts>
    <Host Name="Mailbox" />
  </Hosts>
  <Requirements>
    <Sets DefaultMinVersion="1.1">
      <Set MinVersion="1.1" Name="Mailbox"></Set>
    </Sets>
  </Requirements>

  <FormSettings>
    <Form xsi:type="ItemRead">
      <DesktopSettings>
        <SourceLocation DefaultValue="https://devexhack.azurewebsites.net/" />
        <RequestedHeight>400</RequestedHeight>
      </DesktopSettings>
      <TabletSettings>
        <SourceLocation DefaultValue=
          "https://devexhack.azurewebsites.net/" />
          <RequestedHeight>400</RequestedHeight>
      </TabletSettings>
      <PhoneSettings>
          <SourceLocation DefaultValue=
            "https://devexhack.azurewebsites.net/" />
      </PhoneSettings>
        </Form>
	  <Form xsi:type="ItemEdit">
		  <DesktopSettings>
			  <SourceLocation DefaultValue="https://devexhack.azurewebsites.net/"/>
		  </DesktopSettings>
	  </Form>
  </FormSettings>
      <Permissions>ReadWriteItem</Permissions>
      <Rule xsi:type="RuleCollection" Mode="Or">
		  <Rule xsi:type="ItemIs" ItemType="Message" FormType="Edit" />
		  <Rule xsi:type="ItemIs" ItemType="Appointment" FormType="Edit" />
		  <Rule xsi:type="ItemIs" ItemType="Message" FormType="Read" />
		  <Rule xsi:type="ItemIs" ItemType="Appointment" FormType="Read" />
	  </Rule>
    </OfficeApp>