Change to working sample code

events/README_ApiGatewayEvent.md

@@ -8,20 +8,29 @@ The following is a sample class and Lambda function that receives Amazon API Gat
 
 ```go
 
+package main
+
 import (
-    "strings"
-    "github.com/aws/aws-lambda-go/events"
+	"context"
+	"fmt"
+
+	"github.com/aws/aws-lambda-go/events"
+	"github.com/aws/aws-lambda-go/lambda"
 )
 
-func handleRequest(ctx context.Context, request events.ApiGatewayProxyRequest) events.ApiGatewayProxyResponse {
-    fmt.Printf("Processing request data for request %s.\n", request.RequestContext.RequestId)
-    fmt.Printf("Body size = %d.\n", len(request.Body))
+func handleRequest(ctx context.Context, request events.APIGatewayProxyRequest) (events.APIGatewayProxyResponse, error) {
+	fmt.Printf("Processing request data for request %s.\n", request.RequestContext.RequestID)
+	fmt.Printf("Body size = %d.\n", len(request.Body))
 
-    fmt.Println("Headers:")
-    for key, value := range request.Headers {
-        fmt.Printf("    %s: %s\n", key, value)
-    }
+	fmt.Println("Headers:")
+	for key, value := range request.Headers {
+		fmt.Printf("    %s: %s\n", key, value)
+	}
+
+	return events.APIGatewayProxyResponse{Body: request.Body, StatusCode: 200}, nil
+}
 
-    return ApiGatewayProxyResponse { Body: request.Body, StatusCode: 200 }
+func main() {
+	lambda.Start(handleRequest)
 }
 ```