Added packages.config for skia render tests.

tests/Perspex.RenderTests/Perspex.Skia.RenderTests.csproj

@@ -124,7 +124,7 @@
     <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="packages.config" />
+    <None Include="packages.Perspex.Skia.RenderTests.config" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">

tests/Perspex.RenderTests/packages.Perspex.Skia.RenderTests.config

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Magick.NET-Q16-AnyCPU" version="7.0.0.0101" targetFramework="net45" />
+  <package id="xunit" version="2.1.0" targetFramework="net45" />
+  <package id="xunit.abstractions" version="2.0.0" targetFramework="net45" />
+  <package id="xunit.assert" version="2.1.0" targetFramework="net45" />
+  <package id="xunit.core" version="2.1.0" targetFramework="net45" />
+  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net45" />
+  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net45" />
+</packages>