updated service level readme

Author: scmacdon

javav2/example_code/entityresolution/README.md

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+# AWS Entity Resolution code examples for the SDK for Java 2.x
+
+## Overview
+
+Shows how to use the AWS SDK for Java 2.x to work with AWS Entity Resolution.
+
+<!--custom.overview.start-->
+<!--custom.overview.end-->
+
+_AWS Entity Resolution helps organizations extract, link, and organize information from multiple data sources._
+
+## ⚠ Important
+
+* Running this code might result in charges to your AWS account. For more details, see [AWS Pricing](https://aws.amazon.com/pricing/) and [Free Tier](https://aws.amazon.com/free/).
+* Running the tests might result in charges to your AWS account.
+* We recommend that you grant your code least privilege. At most, grant only the minimum permissions required to perform the task. For more information, see [Grant least privilege](https://docs.aws.amazon.com/IAM/latest/UserGuide/best-practices.html#grant-least-privilege).
+* This code is not tested in every AWS Region. For more information, see [AWS Regional Services](https://aws.amazon.com/about-aws/global-infrastructure/regional-product-services).
+
+<!--custom.important.start-->
+<!--custom.important.end-->
+
+## Code examples
+
+### Prerequisites
+
+For prerequisites, see the [README](../../README.md#Prerequisites) in the `javav2` folder.
+
+
+<!--custom.prerequisites.start-->
+<!--custom.prerequisites.end-->
+
+### Get started
+
+- [Hello AWS Entity Resolution](src/main/java/com/example/entity/HelloEntityResoultion.java#L19) (`listMatchingWorkflows`)
+
+
+### Basics
+
+Code examples that show you how to perform the essential operations within a service.
+
+- [Learn the basics](src/main/java/com/example/entity/scenario/EntityResScenario.java)
+
+
+### Single actions
+
+Code excerpts that show you how to call individual service functions.
+
+- [CheckWorkflowStatus](src/main/java/com/example/entity/scenario/EntityResActions.java#L305)
+- [CreateMatchingWorkflow](src/main/java/com/example/entity/scenario/EntityResActions.java#L333)
+- [CreateSchemaMapping](src/main/java/com/example/entity/scenario/EntityResActions.java#L183)
+- [DeleteMatchingWorkflow](src/main/java/com/example/entity/scenario/EntityResActions.java#L159)
+- [GetMatchingJob](src/main/java/com/example/entity/scenario/EntityResActions.java#L250)
+- [GetSchemaMapping](src/main/java/com/example/entity/scenario/EntityResActions.java#L223)
+- [ListSchemaMappings](src/main/java/com/example/entity/scenario/EntityResActions.java#L136)
+- [StartMatchingJob](src/main/java/com/example/entity/scenario/EntityResActions.java#L276)
+- [TagEntityResource](src/main/java/com/example/entity/scenario/EntityResActions.java#L413)
+- [entityresolution_DeleteSchemaMapping](src/main/java/com/example/entity/scenario/EntityResActions.java#L115)
+
+
+<!--custom.examples.start-->
+<!--custom.examples.end-->
+
+## Run the examples
+
+### Instructions
+
+
+<!--custom.instructions.start-->
+<!--custom.instructions.end-->
+
+#### Hello AWS Entity Resolution
+
+This example shows you how to get started using AWS Entity Resolution.
+
+
+#### Learn the basics
+
+This example shows you how to do the following:
+
+- Create Schema Mapping.
+- Create an AWS Entity Resolution workflow.
+- Start the matching job for the workflow.
+- Get details for the matching job.
+- Get Schema Mapping.
+- List all Schema Mappings.
+- Tag the Schema Mapping resource.
+- Delete the AWS Entity Resolution Assets.
+
+<!--custom.basic_prereqs.entityresolution_Scenario.start-->
+<!--custom.basic_prereqs.entityresolution_Scenario.end-->
+
+
+<!--custom.basics.entityresolution_Scenario.start-->
+<!--custom.basics.entityresolution_Scenario.end-->
+
+
+### Tests
+
+⚠ Running tests might result in charges to your AWS account.
+
+
+To find instructions for running these tests, see the [README](../../README.md#Tests)
+in the `javav2` folder.
+
+
+
+<!--custom.tests.start-->
+<!--custom.tests.end-->
+
+## Additional resources
+
+- [AWS Entity Resolution User Guide](https://docs.aws.amazon.com/entityresolution/latest/userguide/what-is-service.html)
+- [AWS Entity Resolution API Reference](https://docs.aws.amazon.com/entityresolution/latest/apireference/Welcome.html)
+- [SDK for Java 2.x AWS Entity Resolution reference](https://sdk.amazonaws.com/java/api/latest/software/amazon/awssdk/services/entityresolution/package-summary.html)
+
+<!--custom.resources.start-->
+<!--custom.resources.end-->
+
+---
+
+Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+
+SPDX-License-Identifier: Apache-2.0