gistfile1.xml

    <!-- Microsoft.Xna.Framework.GamerServices -->
    <Platform Name="Android,iOS,Linux,MacOS,Ouya,PSMobile,Windows8,Windows,WindowsGL">
      <Compile Include="GamerServices\AchievementCollection.cs" />
      <Compile Include="GamerServices\Achievement.cs" />
      <Compile Include="GamerServices\FriendCollection.cs" />
      <Compile Include="GamerServices\FriendGamer.cs" />
      <Compile Include="GamerServices\GamerCollection.cs" />
      <Compile Include="GamerServices\Gamer.cs" />
      <Compile Include="GamerServices\GamerDefaults.cs" />
      <Compile Include="GamerServices\GamerPresence.cs" />
      <Compile Include="GamerServices\GamerPresenceMode.cs" />
      <Compile Include="GamerServices\GamerPrivileges.cs" />
      <Compile Include="GamerServices\GamerPrivilegeSetting.cs" />
      <Compile Include="GamerServices\GamerProfile.cs" />
    </Platform>

    
    .. instead of....
    
    
        <!-- Microsoft.Xna.Framework.GamerServices -->
    <Compile Include="GamerServices\AchievementCollection.cs">
      <Platforms>Android,iOS,Linux,MacOS,Ouya,PSMobile,Windows8,Windows,WindowsGL</Platforms>
    </Compile>
    <Compile Include="GamerServices\Achievement.cs">
      <Platforms>Android,iOS,Linux,MacOS,Ouya,PSMobile,Windows8,Windows,WindowsGL</Platforms>
    </Compile>
    <Compile Include="GamerServices\FriendCollection.cs">
      <Platforms>Android,iOS,Linux,MacOS,Ouya,PSMobile,Windows8,Windows,WindowsGL</Platforms>
    </Compile>
    <Compile Include="GamerServices\FriendGamer.cs">
      <Platforms>Android,iOS,Linux,MacOS,Ouya,PSMobile,Windows8,Windows,WindowsGL</Platforms>
    </Compile>
    <Compile Include="GamerServices\GamerCollection.cs">
      <Platforms>Android,iOS,Linux,MacOS,Ouya,PSMobile,Windows8,Windows,WindowsGL</Platforms>
    </Compile>
    <Compile Include="GamerServices\Gamer.cs">
      <Platforms>Android,iOS,Linux,MacOS,Ouya,PSMobile,Windows8,Windows,WindowsGL</Platforms>
    </Compile>
    <Compile Include="GamerServices\GamerDefaults.cs">
      <Platforms>Android,iOS,Linux,MacOS,Ouya,PSMobile,Windows8,Windows,WindowsGL</Platforms>
    </Compile>
    <Compile Include="GamerServices\GamerPresence.cs">
      <Platforms>Android,iOS,Linux,MacOS,Ouya,PSMobile,Windows8,Windows,WindowsGL</Platforms>
    </Compile>
    <Compile Include="GamerServices\GamerPresenceMode.cs">
      <Platforms>Android,iOS,Linux,MacOS,Ouya,PSMobile,Windows8,Windows,WindowsGL</Platforms>
    </Compile>
    <Compile Include="GamerServices\GamerPrivileges.cs">
      <Platforms>Android,iOS,Linux,MacOS,Ouya,PSMobile,Windows8,Windows,WindowsGL</Platforms>
    </Compile>
    <Compile Include="GamerServices\GamerPrivilegeSetting.cs">
      <Platforms>Android,iOS,Linux,MacOS,Ouya,PSMobile,Windows8,Windows,WindowsGL</Platforms>
    </Compile>
    <Compile Include="GamerServices\GamerProfile.cs">
      <Platforms>Android,iOS,Linux,MacOS,Ouya,PSMobile,Windows8,Windows,WindowsGL</Platforms>
    </Compile>