Merge pull request dotnet#501 from YingP99/annotation

Add System.ComponentModel.Annotations library and tests

src/System.ComponentModel.Annotations.sln

@@ -0,0 +1,39 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2013
+VisualStudioVersion = 12.0.30723.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "System.ComponentModel.Annotations", "System.ComponentModel.Annotations\src\System.ComponentModel.Annotations.csproj", "{4266D58F-EB60-46C2-BA81-3ABDE759A7D5}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "System.ComponentModel.Annotations.Tests", "System.ComponentModel.Annotations\tests\System.ComponentModel.Annotations.Tests.csproj", "{6E48765E-D6AC-4A79-9C2E-B5EE67EEDECF}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "XunitTraitsDiscoverers", "Common\tests\XunitTraitsDiscoverers\XunitTraitsDiscoverers.csproj", "{BE8ED8C1-C314-4C4E-A929-64C9C8B3552A}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = ".nuget", ".nuget", "{3A3E1C22-FF83-4D70-A94A-6C130805E6BF}"
+	ProjectSection(SolutionItems) = preProject
+		.nuget\packages.config = .nuget\packages.config
+	EndProjectSection
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{4266D58F-EB60-46C2-BA81-3ABDE759A7D5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4266D58F-EB60-46C2-BA81-3ABDE759A7D5}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4266D58F-EB60-46C2-BA81-3ABDE759A7D5}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4266D58F-EB60-46C2-BA81-3ABDE759A7D5}.Release|Any CPU.Build.0 = Release|Any CPU
+		{6E48765E-D6AC-4A79-9C2E-B5EE67EEDECF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6E48765E-D6AC-4A79-9C2E-B5EE67EEDECF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6E48765E-D6AC-4A79-9C2E-B5EE67EEDECF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6E48765E-D6AC-4A79-9C2E-B5EE67EEDECF}.Release|Any CPU.Build.0 = Release|Any CPU
+		{BE8ED8C1-C314-4C4E-A929-64C9C8B3552A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{BE8ED8C1-C314-4C4E-A929-64C9C8B3552A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BE8ED8C1-C314-4C4E-A929-64C9C8B3552A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{BE8ED8C1-C314-4C4E-A929-64C9C8B3552A}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

src/System.ComponentModel.Annotations/src/Properties/AssemblyInfo.cs

@@ -0,0 +1,26 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using System;
+using System.Reflection;
+using System.Resources;
+using System.Runtime.InteropServices;
+
+[assembly: AssemblyCopyright("\x00a9 Microsoft Corporation.  All rights reserved.")]
+[assembly: AssemblyCompany("Microsoft Corporation")]
+[assembly: AssemblyFileVersion("999.999.999.0")]
+[assembly: AssemblyInformationalVersion("999.999.999.0")]
+[assembly: AssemblyVersion("999.999.999.0")]
+[assembly: AssemblyTitle("System.ComponentModel.Annotations")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyProduct("System.ComponentModel.Annotations")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+[assembly: NeutralResourcesLanguageAttribute("en-US")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+[assembly: CLSCompliant(true)]