[SKIP CI] update readme

README.md

@@ -74,7 +74,15 @@ network_interfaces: {}
 #### Example usage
 
 ```YAML
-
+network_interfaces:
+  eth0:
+    bootproto: none
+    onboot: yes
+    hwaddr: "aa:bb:cc:dd:ee"
+    ipaddr: 192.168.0.5
+    prefix: 26
+    gateway: "192.168.0.1"
+    userctl: no
 ```
 
 ### network_hosts_entries
@@ -85,6 +93,15 @@ network_interfaces: {}
 network_hosts_entries: []
 ```
 
+#### Example usage
+
+```YAML
+network_hosts_entries:
+  - hostname: myhost
+    fqdn: myhost.rknet.org
+    address: 1.2.3.4
+```
+
 ## Dependencies
 
 None.