add nunit runner as nuget so tests can be run in the TestExplorer in VS

ICSharpCode.Decompiler/Tests/ICSharpCode.Decompiler.Tests.csproj

@@ -49,10 +49,26 @@
     <Reference Include="DiffLib">
       <HintPath>..\..\packages\DiffLib.1.0.0.55\lib\net35-Client\DiffLib.dll</HintPath>
     </Reference>
+    <Reference Include="nunit.core, Version=2.6.4.14350, Culture=neutral, PublicKeyToken=96d09a1eb7f44a77, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\NUnitTestAdapter.2.0.0\lib\nunit.core.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
+    <Reference Include="nunit.core.interfaces, Version=2.6.4.14350, Culture=neutral, PublicKeyToken=96d09a1eb7f44a77, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\NUnitTestAdapter.2.0.0\lib\nunit.core.interfaces.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
     <Reference Include="nunit.framework">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>.\nunit.framework.dll</HintPath>
     </Reference>
+    <Reference Include="nunit.util, Version=2.6.4.14350, Culture=neutral, PublicKeyToken=96d09a1eb7f44a77, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\NUnitTestAdapter.2.0.0\lib\nunit.util.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
+    <Reference Include="NUnit.VisualStudio.TestAdapter, Version=2.0.0.0, Culture=neutral, PublicKeyToken=4cb40d35494691ac, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\NUnitTestAdapter.2.0.0\lib\NUnit.VisualStudio.TestAdapter.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>

ICSharpCode.Decompiler/Tests/packages.config

@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="DiffLib" version="1.0.0.55" />
+  <package id="NUnitTestAdapter" version="2.0.0" targetFramework="net45" />
 </packages>