Updated license section. (#25)

Updated credits section.
Added an example log4j2.xml file.
Updated the plugin dependency example.

Author: msailes

README.md

@@ -2,7 +2,6 @@
 
 ![aws provider](https://img.shields.io/badge/provider-AWS-orange?logo=amazon-aws&color=ff9900)
 
-
 A suite of utilities for AWS Lambda Functions that makes tracing with AWS X-Ray, structured logging and creating custom metrics asynchronously easier.
 
 **[📜Documentation](https://awslabs.github.io/aws-lambda-powertools-java/)** | **[Feature request](https://github.com/awslabs/aws-lambda-powertools-java/issues/new?assignees=&labels=feature-request%2C+triage&template=feature_request.md&title=)** | **[🐛Bug Report](https://github.com/awslabs/aws-lambda-powertools-java/issues/new?assignees=&labels=bug%2C+triage&template=bug_report.md&title=)** | **[Detailed blog post](https://aws.amazon.com/blogs/opensource/simplifying-serverless-best-practices-with-lambda-powertools/)**
@@ -27,6 +26,9 @@ Powertools is available in Maven Central. You can use your favourite dependency
 And configure the aspectj-maven-plugin to compile-time weave (CTW) the aws-lambda-powertools-java aspects into your project:
 
 ```xml
+<build>
+    <plugins>
+        ...
         <plugin>
              <groupId>com.nickwongdev</groupId>
              <artifactId>aspectj-maven-plugin</artifactId>
@@ -50,25 +52,37 @@ And configure the aspectj-maven-plugin to compile-time weave (CTW) the aws-lambd
                  </execution>
              </executions>
         </plugin>
-
-```
-* [gradle](https://gradle.org/):
+        ...
+    </plugins>
+</build>
 ```
-repositories {
-    mavenCentral()
-}
 
-dependencies {
-    powertools 'software.amazon.lambda:aws-lambda-powertools-java:YOUR_REQUIRED_VERSION'
-}
+### Logging Configuration
+Powertools extends the functionality of Log4J. Below is an example `log4j2.xml` file, with the `LambdaJsonLayout` configured.
+
+```xml
+<?xml version="1.0" encoding="UTF-8"?>
+<Configuration packages="com.amazonaws.services.lambda.runtime.log4j2">
+    <Appenders>
+        <Console name="JsonAppender" target="SYSTEM_OUT">
+            <LambdaJsonLayout compact="true" eventEol="true"/>
+        </Console>
+    </Appenders>
+    <Loggers>
+        <Logger name="JsonLogger" level="INFO" additivity="false">
+            <AppenderRef ref="JsonAppender"/>
+        </Logger>
+        <Root level="info">
+            <AppenderRef ref="JsonAppender"/>
+        </Root>
+    </Loggers>
+</Configuration>
 ```
 
 ## Credits
 
-* Structured logging initial implementation from [aws-lambda-logging](https://gitlab.com/hadrien/aws_lambda_logging)
-* Powertools idea [DAZN Powertools](https://github.com/getndazn/dazn-lambda-powertools/)
 * [Gatsby Apollo Theme for Docs](https://github.com/apollographql/gatsby-theme-apollo/tree/master/packages/gatsby-theme-apollo-docs)
 
 ## License
 
-This library is licensed under the MIT-0 License. See the LICENSE file.
+This library is licensed under the Apache License, Version 2.0. See the LICENSE file.