Update readme about how to define multiple configmaps and secrets

Signed-off-by: faizanahmad055 <faizan.ahmad55@outlook.com>

README.md

@@ -21,6 +21,8 @@ Reloader can watch changes in `ConfigMap` and `Secret` and do rolling upgrades o
 
 ## How to use Reloader
 
+### Configmap
+
 For a `Deployment` called `foo` have a `ConfigMap` called `foo-configmap`. Then add this annotation to your `Deployment`
 
 ```yaml
@@ -29,7 +31,15 @@ metadata:
     configmap.reloader.stakater.com/reload: "foo-configmap"
 ```
 
-OR
+Use comma separated list to define multiple configmaps.
+
+```yaml
+metadata:
+  annotations:
+    configmap.reloader.stakater.com/reload: "foo-configmap, bar-configmap, baz-configmap"
+```
+
+### Secret
 
 For a `Deployment` called `foo` have a `Secret` called `foo-secret`. Then add this annotation to your `Deployment`
 
@@ -39,6 +49,14 @@ metadata:
     secret.reloader.stakater.com/reload: "foo-secret"
 ```
 
+Use comma separated list to define multiple secrets.
+
+```yaml
+metadata:
+  annotations:
+    secret.reloader.stakater.com/reload: "foo-secret, bar-secret, baz-secret"
+```
+
 ## Deploying to Kubernetes
 
 You can deploy Reloader by following methods: