README.md in kitchen-ec2-0.5.0 vs README.md in kitchen-ec2-0.5.1

@@ -95,10 +95,16 @@
 
 Path to the private SSH key used to connect to the instance.
 
 The default is unset, or `nil`.
 
+### <a name="config-subnet-id"></a> subnet\_id
+
+The EC2 [subnet][subnet_docs] to use.
+
+The default is unset, or `nil`.
+
 ### <a name="config-sudo"></a> sudo
 
 Whether or not to prefix remote system commands such as installing and
 running Chef with `sudo`.
 
@@ -130,10 +136,11 @@
   aws_ssh_key_id: id_rsa-aws
   ssh_key: /path/to/id_rsa-aws
   region: us-east-1
   availability_zone: us-east-1b
   require_chef_omnibus: true
+  subnet_id: subnet-6d6...
 
 platforms:
 - name: ubuntu-12.04
   driver_config:
     image_id: ami-fd20ad94
@@ -213,5 +220,6 @@
 [fog_gem]:          http://fog.io/
 [group_docs]:       http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-network-security.html
 [instance_docs]:    http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html
 [key_id_docs]:      http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/verifying-your-key-pair.html
 [region_docs]:      http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-regions-availability-zones.html
+[subnet_docs]:      http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-subnet.html