Added providers to metapackage

src/Discord.Net/Discord.Net.csproj

@@ -1,4 +1,4 @@
-<Project ToolsVersion="15.0" Sdk="Microsoft.NET.Sdk" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="15.0" Sdk="Microsoft.NET.Sdk" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Description>An aynchronous API wrapper for Discord. This metapackage includes all of the optional Discord.Net components.</Description>
     <VersionPrefix>1.0.0-beta2</VersionPrefix>
@@ -22,4 +22,8 @@
     <ProjectReference Include="..\Discord.Net.Rpc\Discord.Net.Rpc.csproj" />
     <ProjectReference Include="..\Discord.Net.Commands\Discord.Net.Commands.csproj" />
   </ItemGroup>
+  <ItemGroup Condition="'$(TargetFramework)'=='netstandard1.1'">
+    <ProjectReference Include="..\Discord.Net.Providers.UdpClient\Discord.Net.Providers.UdpClient.csproj" />
+    <ProjectReference Include="..\Discord.Net.Providers.WS4Net\Discord.Net.Providers.WS4Net.csproj" />
+  </ItemGroup>
 </Project>