adding basic docs (#230)

Signed-off-by: Attila Mészáros <[email protected]>

Author: csviri

README.md

@@ -2,4 +2,18 @@
 
 Supports Spring Boot 3.x
 
-You can see configuration properties root [here](./starter/src/main/java/io/javaoperatorsdk/operator/springboot/starter/OperatorConfigurationProperties.java).
+## Getting Started
+
+Easiest way to get started, is to take a look on [WebPage sample](./samples/webpage).
+
+## Configuration Properties
+
+You can see configuration operator properties root [here](./starter/src/main/java/io/javaoperatorsdk/operator/springboot/starter/OperatorConfigurationProperties.java).
+
+Reconciler properties [here](./starter/src/main/java/io/javaoperatorsdk/operator/springboot/starter/ReconcilerProperties.java).
+
+## Overriding default implementation
+
+You can provide own implementation instead of the by default provided beans,
+life for the [Fabric8 client](https://github.com/operator-framework/josdk-spring-boot-starter/blob/main/starter/src/main/java/io/javaoperatorsdk/operator/springboot/starter/OperatorAutoConfiguration.java#L51)
+but also the [Operator instance](https://github.com/operator-framework/josdk-spring-boot-starter/blob/main/starter/src/main/java/io/javaoperatorsdk/operator/springboot/starter/OperatorAutoConfiguration.java#L94).