Updated readmes to improve copy pastability

Also added instructions for native compilation for those apps that it is useful

Added documentation for native compilation when using Single Step Batch Processing

Updated documentaiton for native compilation for single app processing

docs/src/main/asciidoc/batch-starter.adoc

@@ -365,6 +365,32 @@ itself by setting the following properties:
 
 See the https://docs.spring.io/spring-batch/docs/4.3.x/api/org/springframework/batch/item/kafka/KafkaItemReader.html[`KafkaItemReader` documentation].
 
+[[nativeCompilation]]
+=== Native Compilation
+The advantage of Single Step Batch Processing is that it lets you dynamically select which reader and writer beans to use at runtime when you use the JVM.
+However, when you use native compilation, you must determine the reader and writer at build time instead of runtime.
+The following example does so:
+
+[source,xml]
+<plugin>
+    <groupId>org.springframework.boot</groupId>
+    <artifactId>spring-boot-maven-plugin</artifactId>
+    <executions>
+        <execution>
+            <id>process-aot</id>
+            <goals>
+                <goal>process-aot</goal>
+            </goals>
+            <configuration>
+                <jvmArguments>
+                    -Dspring.batch.job.flatfileitemreader.name=fooReader
+                    -Dspring.batch.job.flatfileitemwriter.name=fooWriter
+                </jvmArguments>
+            </configuration>
+        </execution>
+    </executions>
+</plugin>
+
 [[item-processors]]
 == ItemProcessor Configuration