message: rename import to apigw
diff: import * as cdk from '@aws-cdk/core';
  import lambda = require('@aws-cdk/aws-lambda');
  import dynamodb = require('@aws-cdk/aws-dynamodb');
  -import apigw_httpApi = require('@aws-cdk/aws-apigatewayv2');
  +import apigw = require('@aws-cdk/aws-apigatewayv2');
  export class TheSimpleWebserviceStack extends cdk.Stack {
  constructor(scope: cdk.Construct, id: string, props?: cdk.StackProps) {
  @@ -26,8 +26,8 @@ export class TheSimpleWebserviceStack extends cdk.Stack {
  table.grantReadWriteData(dynamoLambda);
  // defines an API Gateway Http API resource backed by our "dynamoLambda" function.
  - let api = new apigw_httpApi.HttpApi(this, 'Endpoint', {
  - defaultIntegration: new apigw_httpApi.LambdaProxyIntegration({
  + let api = new apigw.HttpApi(this, 'Endpoint', {
  + defaultIntegration: new apigw.LambdaProxyIntegration({
  handler: dynamoLambda
  }),
  });
  