Add cmdlet example project with readme

docs/cmdlet-example/project.json

@@ -0,0 +1,19 @@
+{
+    "name": "SendGreeting",
+    "description": "Example C# Cmdlet project",
+    "version": "1.0.0-*",
+
+    "dependencies": {
+        "Microsoft.PowerShell.5.ReferenceAssemblies": "1.0.0-*"
+    },
+
+    "frameworks": {
+        "netstandard1.5": {
+            "imports": [ "net40" ],
+            "dependencies": {
+                "Microsoft.NETCore": "5.0.1-*",
+                "Microsoft.NETCore.Portable.Compatibility": "1.0.1-*"
+            }
+        }
+    }
+}