Apply StyleCop to library project

Author: AArnott

nuget.config

@@ -3,4 +3,7 @@
   <config>
     <add key="repositorypath" value="packages" />
   </config>
+  <packageSources>
+    <add key="myget.org/F/aarnott" value="https://www.myget.org/F/aarnott/api/v2" />
+  </packageSources>
 </configuration>

src/Xunit.Combinatorial/CombinatorialValuesAttribute.cs

@@ -3,16 +3,27 @@
     using System;
     using Validation;
 
+    /// <summary>
+    /// Specifies which values for this parameter should be used for running the test method.
+    /// </summary>
     [AttributeUsage(AttributeTargets.Parameter)]
     public class CombinatorialValuesAttribute : Attribute
     {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="CombinatorialValuesAttribute"/> class.
+        /// </summary>
+        /// <param name="values">The values to pass to this parameter.</param>
         public CombinatorialValuesAttribute(params object[] values)
         {
             Requires.NotNull(values, nameof(values));
 
             this.Values = values;
         }
 
+        /// <summary>
+        /// Gets the values that should be passed to this parameter on the test method.
+        /// </summary>
+        /// <value>An array of values.</value>
         public object[] Values { get; }
     }
 }

src/Xunit.Combinatorial/Xunit.Combinatorial.csproj

@@ -57,6 +57,9 @@
   <ItemGroup>
     <None Include="packages.config" />
   </ItemGroup>
+  <ItemGroup>
+    <Analyzer Include="..\..\packages\StyleCop.Analyzers.1.0.0-alpha-g4e621dfd0d\tools\analyzers\StyleCop.Analyzers.dll" />
+  </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath32)\Microsoft\Portable\$(TargetFrameworkVersion)\Microsoft.Portable.CSharp.targets" />
   <Import Project="..\..\Packages\Nerdbank.GitVersioning.1.0.15178-beta\build\NerdBank.GitVersioning.targets" Condition="Exists('..\..\Packages\Nerdbank.GitVersioning.1.0.15178-beta\build\NerdBank.GitVersioning.targets')" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">

src/Xunit.Combinatorial/packages.config

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Nerdbank.GitVersioning" version="1.0.15178-beta" targetFramework="portable45-net45+win8+wp8+wpa81" developmentDependency="true" />
+  <package id="StyleCop.Analyzers" version="1.0.0-alpha-g4e621dfd0d" targetFramework="portable45-net45+win8+wp8+wpa81" developmentDependency="true" />
   <package id="Validation" version="2.0.6.15003" targetFramework="portable45-net45+win8+wp8+wpa81" />
   <package id="xunit.abstractions" version="2.0.0" targetFramework="portable45-net45+win8+wp8+wpa81" />
   <package id="xunit.extensibility.core" version="2.0.0" targetFramework="portable45-net45+win8+wp8+wpa81" />