Add NuGet sample (#20)

Per https://github.com/dotnet/docs/pull/2495#discussion_r127284220

16-nuget-package/GarciaSoftware.ConsoleTemplate.CSharp/GarciaSoftware.ConsoleTemplate.CSharp.nuspec

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<package xmlns="http://schemas.microsoft.com/packaging/2012/06/nuspec.xsd">
+  <metadata>
+    <id>GarciaSoftware.ConsoleTemplate.CSharp</id>
+    <version>1.0.0</version>
+    <description>
+      Creates the Garcia Software console app.
+    </description>
+    <authors>Catalina Garcia</authors>
+    <packageTypes>
+      <packageType name="Template" />
+    </packageTypes>
+  </metadata>
+</package>

16-nuget-package/GarciaSoftware.ConsoleTemplate.CSharp/content/.template.config/template.json

@@ -0,0 +1,8 @@
+{
+  "$schema": "http://json.schemastore.org/template",
+  "author": "Catalina Garcia",
+  "classifications": [ "Common", "Console" ],
+  "identity": "GarciaSoftware.ConsoleTemplate.CSharp",
+  "name": "Garcia Software Console Application",
+  "shortName": "garciaconsole"
+}

16-nuget-package/GarciaSoftware.ConsoleTemplate.CSharp/content/Program.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace content
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Hello World!");
+        }
+    }
+}

16-nuget-package/GarciaSoftware.ConsoleTemplate.CSharp/content/content.csproj

@@ -0,0 +1,8 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>

16-nuget-package/README.md

@@ -0,0 +1,6 @@
+The sample in this folder demonstrates:
+
+ - **How to create a NuGet-packaged template**
+
+See [`GarciaSoftware.ConsoleTemplate.CSharp.nuspec`](./GarciaSoftware.ConsoleTemplate.CSharp/GarciaSoftware.ConsoleTemplate.CSharp.nuspec) and [`template.json`](./GarciaSoftware.ConsoleTemplate.CSharp/content/.template.config/template.json)
+