docs(aws-s3-notifications): added example usage of aws-s3-notificatio…

…ns.LambdaDestination (aws#16896)

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

packages/@aws-cdk/aws-s3-notifications/README.md

@@ -12,7 +12,7 @@
 This module includes integration classes for using Topics, Queues or Lambdas
 as S3 Notification Destinations.
 
-## Example
+## Examples
 
 The following example shows how to send a notification to an SNS
 topic when an object is created in an S3 bucket:
@@ -25,3 +25,18 @@ const topic = new sns.Topic(stack, 'Topic');
 
 bucket.addEventNotification(s3.EventType.OBJECT_CREATED_PUT, new s3n.SnsDestination(topic));
 ```
+
+The following example shows how to send a notification to a Lambda function when an object is created in an S3 bucket:
+
+```ts
+import * as s3n from '@aws-cdk/aws-s3-notifications';
+
+const bucket = new s3.Bucket(stack, 'Bucket');
+const fn = new Function(this, 'MyFunction', {
+  runtime: Runtime.NODEJS_12_X,
+  handler: 'index.handler',
+  code: Code.fromAsset(path.join(__dirname, 'lambda-handler')),
+});
+
+bucket.addEventNotification(s3.EventType.OBJECT_CREATED, new s3n.LambdaDestination(fn));
+```

packages/@aws-cdk/aws-wafv2/README.md

@@ -18,3 +18,23 @@ This module is part of the [AWS Cloud Development Kit](https://github.com/aws/aw
 ```ts
 import * as wafv2 from '@aws-cdk/aws-wafv2';
 ```
+
+## Examples
+
+Create a simple WebACL resource.
+
+```csharp
+var WebACL = new CfnWebACL(this, "WebACL", new CfnWebACLProps{
+   Name = "MyWebACL",
+   Scope = "REGIONAL",
+   DefaultAction =  new CfnWebACL.DefaultActionProperty {
+       Allow = new CfnWebACL.AllowActionProperty{}
+   },
+   VisibilityConfig = new CfnWebACL.VisibilityConfigProperty {
+       SampledRequestsEnabled = true,
+       CloudWatchMetricsEnabled = true,
+       MetricName = "WebACL",
+   },
+   Rules = new CfnWebACL.RuleProperty[] {}
+  });
+```