Add simple project.

Author: bgrainger

Playground.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.29411.108
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "PlaygroundLibrary", "src\PlaygroundLibrary\PlaygroundLibrary.csproj", "{0924E8D4-547D-43CC-A3F6-D17778671820}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{0924E8D4-547D-43CC-A3F6-D17778671820}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0924E8D4-547D-43CC-A3F6-D17778671820}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{0924E8D4-547D-43CC-A3F6-D17778671820}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{0924E8D4-547D-43CC-A3F6-D17778671820}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {283AF911-A51F-49EF-AA77-B492008508A5}
+	EndGlobalSection
+EndGlobal

src/PlaygroundLibrary/PlaygroundLibrary.csproj

@@ -0,0 +1,7 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>

src/PlaygroundLibrary/Utility.cs

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+namespace PlaygroundLibrary
+{
+	public static class Utility
+	{
+		public static int GetRandomNumber()
+		{
+			// chosen by fair dice roll.
+			// guaranteed to be random.
+			return 4;
+		}
+	}
+}