add external_nat_ips variable to deal with empty nat_public_ips output

Author: DrFaust92

examples/complete-vpc/README.md

@@ -17,6 +17,10 @@ $ terraform apply
 Note that this example may create resources which can cost money (AWS Elastic IP, for example). Run `terraform destroy` when you don't need these resources.
 
 <!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
+## Requirements
+
+No requirements.
+
 ## Providers
 
 | Name | Version |

examples/ipv6/README.md

@@ -15,6 +15,10 @@ $ terraform apply
 Note that this example may create resources which can cost money (AWS Elastic IP, for example). Run `terraform destroy` when you don't need these resources.
 
 <!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
+## Requirements
+
+No requirements.
+
 ## Providers
 
 | Name | Version |

examples/issue-108-route-already-exists/README.md

@@ -19,6 +19,10 @@ $ terraform apply
 Note that this example may create resources which can cost money (AWS Elastic IP, for example). Run `terraform destroy` when you don't need these resources.
 
 <!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
+## Requirements
+
+No requirements.
+
 ## Providers
 
 No provider.

examples/issue-44-asymmetric-private-subnets/README.md

@@ -17,6 +17,10 @@ $ terraform apply
 Note that this example may create resources which can cost money (AWS Elastic IP, for example). Run `terraform destroy` when you don't need these resources.
 
 <!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
+## Requirements
+
+No requirements.
+
 ## Providers
 
 No provider.

examples/issue-46-no-private-subnets/README.md

@@ -17,6 +17,10 @@ $ terraform apply
 Note that this example may create resources which can cost money (AWS Elastic IP, for example). Run `terraform destroy` when you don't need these resources.
 
 <!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
+## Requirements
+
+No requirements.
+
 ## Providers
 
 No provider.

examples/manage-default-vpc/README.md

@@ -17,6 +17,10 @@ $ terraform apply
 Run `terraform destroy` when you don't need these resources.
 
 <!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
+## Requirements
+
+No requirements.
+
 ## Providers
 
 No provider.

examples/network-acls/README.md

@@ -19,6 +19,10 @@ $ terraform apply
 Note that this example may create resources which can cost money (AWS Elastic IP, for example). Run `terraform destroy` when you don't need these resources.
 
 <!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
+## Requirements
+
+No requirements.
+
 ## Providers
 
 No provider.

examples/secondary-cidr-blocks/README.md

@@ -17,6 +17,10 @@ $ terraform apply
 Note that this example may create resources which can cost money (AWS Elastic IP, for example). Run `terraform destroy` when you don't need these resources.
 
 <!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
+## Requirements
+
+No requirements.
+
 ## Providers
 
 No provider.

examples/simple-vpc/README.md

@@ -21,6 +21,10 @@ $ terraform apply
 Note that this example may create resources which can cost money (AWS Elastic IP, for example). Run `terraform destroy` when you don't need these resources.
 
 <!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
+## Requirements
+
+No requirements.
+
 ## Providers
 
 | Name | Version |

examples/test_fixture/README.md

@@ -21,6 +21,10 @@ Finished in 4.25 seconds (files took 2.75 seconds to load)
 This will destroy any existing test resources, create the resources afresh, run the tests, report back, and destroy the resources.
 
 <!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
+## Requirements
+
+No requirements.
+
 ## Providers
 
 | Name | Version |
@@ -30,7 +34,7 @@ This will destroy any existing test resources, create the resources afresh, run
 ## Inputs
 
 | Name | Description | Type | Default | Required |
-|------|-------------|------|---------|:-----:|
+|------|-------------|------|---------|:--------:|
 | region | n/a | `string` | `"eu-west-1"` | no |
 
 ## Outputs