Add project files.

BeckmanComms.Api.DataTransferObjects.sln

+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.26730.12
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BeckmanComms.Api.DataTransferObjects", "BeckmanComms.Api.DataTransferObjects\BeckmanComms.Api.DataTransferObjects.csproj", "{81DCF81E-9A73-4731-8623-EF75FAE263A7}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{81DCF81E-9A73-4731-8623-EF75FAE263A7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{81DCF81E-9A73-4731-8623-EF75FAE263A7}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{81DCF81E-9A73-4731-8623-EF75FAE263A7}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{81DCF81E-9A73-4731-8623-EF75FAE263A7}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {7DDDED2C-451D-43F8-8F34-B999832757DD}
+	EndGlobalSection
+EndGlobal

BeckmanComms.Api.DataTransferObjects/BeckmanComms.Api.DataTransferObjects.csproj

+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard1.4</TargetFramework>
+  </PropertyGroup>
+
+</Project>

BeckmanComms.Api.DataTransferObjects/Class1.cs

+using System;
+
+namespace BeckmanComms.Api.DataTransferObjects
+{
+    public class Class1
+    {
+    }
+}