Update readme with docker images

Signed-off-by: Xabier Larrakoetxea <me@slok.dev>

README.md

@@ -4,6 +4,26 @@ A kubernetes code generator ready container to create your CRD autogenerated cod
 
 This uses the [official util](https://github.com/kubernetes/code-generator) created by Kubernetes to autogenerate the code required by Kubernetes resources.
 
+## Docker image versions
+
+|                   | Docker image                                             |
+| ----------------- | -------------------------------------------------------- |
+| Kubernetes v1.9   | `docker pull quay.io/slok/kube-code-generator:v1.9.1`    |
+| Kubernetes v1.10  | `docker pull quay.io/slok/kube-code-generator:v1.10.0`   |
+| Kubernetes v1.11  | `docker pull quay.io/slok/kube-code-generator:v1.11.3`  |
+| Kubernetes v1.12  | `docker pull quay.io/slok/kube-code-generator:v1.12.4`   |
+| Kubernetes v1.13  | `docker pull quay.io/slok/kube-code-generator:v1.13.5`   |
+| Kubernetes v1.14  | `docker pull quay.io/slok/kube-code-generator:v1.14.2`   |
+| Kubernetes v1.15  | `docker pull quay.io/slok/kube-code-generator:v1.15.10`  |
+| Kubernetes v1.16  | `docker pull quay.io/slok/kube-code-generator:v1.16.7`   |
+
+## Getting started
+
+The best way to start is by checking an [example](example/) of how
+to generate Go code for a CRD.
+
+For a detailed explanation of how to use it continue reading.
+
 ## Kubernetes type code generation
 
 ### Env vars required
@@ -49,7 +69,3 @@ docker run -it --rm \
     -e OPENAPI_OUTPUT_PACKAGE=${PROJECT_PACKAGE}/openapi \
     quay.io/slok/kube-code-generator ./update-openapi.sh
 ```
-
-## Example
-
-You have a project example in [example](example/) path.