doc/migration: Tweak client examples, add unstructured (#693)

doc/migration/v0.1.0-migration-guide.md

@@ -208,18 +208,20 @@ See the examples below and the controller-runtime [client API doc][client-api-do
 ```Go
 // Create
 dep := &appsv1.Deployment{...}
-err := sdk.Create(dep)
 // v0.0.1
+err := sdk.Create(dep)
+// v0.1.0
 err := r.client.Create(context.TODO(), dep)
 
 // Update
+// v0.1.0
 err := sdk.Update(dep)
-// v0.0.1
+// v0.1.0
 err := r.client.Update(context.TODO(), dep)
 
 // Delete
 err := sdk.Delete(dep)
-// v0.0.1
+// v0.1.0
 err := r.client.Delete(context.TODO(), dep)
 
 // List
@@ -237,6 +239,10 @@ err := sdk.Get(dep)
 // v0.1.0
 dep := &appsv1.Deployment{}
 err = r.client.Get(context.TODO(), types.NamespacedName{Name: name, Namespace: namespace}, dep)
+// v0.1.0 with unstructured
+dep := &unstructured.Unstructured{}
+dep.SetGroupVersionKind(schema.GroupVersionKind{Group:"apps", Version: "v1", Kind:"Deployment"})
+err = r.client.Get(context.TODO(), types.NamespacedName{Name: name, Namespace: namespace}, dep)
 ```
 
 Lastly copy and initialize any other fields that you may have had in your `Handler` struct into the `Reconcile<Kind>` struct: