reformat readme

README.md

@@ -12,7 +12,7 @@ free to use the supplied examples as starting point:
 
 ## Docker
 
-```
+```sh
 docker run -v $(pwd)/example_configs/fetchmailrc:/.fetchmailrc -v $(pwd)/example_configs/pmmlrc:/.pmmlrc -it pmml:0.1.4
 ```
 
@@ -21,22 +21,22 @@ If using kubernetes the configuration files should be injected as secret into
 the pod executing pmml.
 
 First create the secrets:
-```
+```sh
 kubectl create secret generic pmml-pmmlrc --from-file example_configs/pmmlrc -n pmml
 ```
 
-```
+```sh
 kubectl create secret generic pmml-fetchmailrc --from-file example_configs/fetchmailrc -n pmml
 ```
 
 Afterwards create the deployment:
-```
+```sh
 kubectl -n pmml apply -f example_configs/pmml_deployment.yml
 ```
 
 ## Updating secrets
 After updating either of the supplied secrets you will need to restart the
 pmml pod:
-```
+```sh
 kubectl -n pmml delete pod $(kubectl -n pmml get pods | tail -1 | awk '{print $1}')
 ```