update README.md

Author: anmolnagpal

README.md

@@ -7,14 +7,14 @@
     Terraform Aws Acm
 </h1>
 
-<p align="center" style="font-size: 1.2rem;">
+<p align="center" style="font-size: 1.2rem;"> 
     This terraform module is used for requesting or importing SSL/TLS certificate with validation.
      </p>
 
 <p align="center">
 
 <a href="https://www.terraform.io">
-  <img src="https://img.shields.io/badge/Terraform-v0.14-green" alt="Terraform">
+  <img src="https://img.shields.io/badge/Terraform-v0.15-green" alt="Terraform">
 </a>
 <a href="LICENSE.md">
   <img src="https://img.shields.io/badge/License-MIT-blue.svg" alt="Licence">
@@ -38,7 +38,7 @@
 <hr>
 
 
-We eat, drink, sleep and most importantly love **DevOps**. We are working towards strategies for standardizing architecture while ensuring security for the infrastructure. We are strong believer of the philosophy <b>Bigger problems are always solved by breaking them into smaller manageable problems</b>. Resonating with microservices architecture, it is considered best-practice to run database, cluster, storage in smaller <b>connected yet manageable pieces</b> within the infrastructure.
+We eat, drink, sleep and most importantly love **DevOps**. We are working towards strategies for standardizing architecture while ensuring security for the infrastructure. We are strong believer of the philosophy <b>Bigger problems are always solved by breaking them into smaller manageable problems</b>. Resonating with microservices architecture, it is considered best-practice to run database, cluster, storage in smaller <b>connected yet manageable pieces</b> within the infrastructure. 
 
 This module is basically combination of [Terraform open source](https://www.terraform.io/) and includes automatation tests and examples. It also helps to create and improve your infrastructure with minimalistic code instead of maintaining the whole infrastructure code yourself.
 
@@ -49,7 +49,7 @@ We have [*fifty plus terraform modules*][terraform_modules]. A few of them are c
 
 ## Prerequisites
 
-This module has a few dependencies:
+This module has a few dependencies: 
 
 - [Terraform 0.13](https://learn.hashicorp.com/terraform/getting-started/install.html)
 - [Go](https://golang.org/doc/install)
@@ -73,7 +73,7 @@ Here are some examples of how you can use this module in your inventory structur
 ```hcl
 module "acm" {
   source                   = "clouddrove/acm/aws"
-  version                  = "0.14.0"
+  version                  = "0.15.0"
   name                     = "certificate"
   environment              = "test"
   label_order              = ["name","environment"]
@@ -88,7 +88,7 @@ module "acm" {
 ```hcl
 module "acm" {
   source                = "clouddrove/acm/aws"
-  version               = "0.14.0"
+  version               = "0.15.0"
   name                  = "certificate"
   environment           = "test"
   label_order          = ["name","environment"]
@@ -103,7 +103,7 @@ module "acm" {
 ```hcl
 module "acm" {
   source              = "clouddrove/acm/aws"
-  version             = "0.14.0"
+  version             = "0.15.0"
   name                = "certificate"
   environment         = "test"
   label_order         = ["name","environment"]
@@ -137,6 +137,7 @@ module "acm" {
 | name | Name  (e.g. `app` or `cluster`). | `string` | `""` | no |
 | private\_key | Path of private key. | `string` | `""` | no |
 | repository | Terraform current module repo | `string` | `"https://registry.terraform.io/modules/clouddrove/acm/aws"` | no |
+| subject\_alternative\_names | Set of domains that should be SANs in the issued certificate. To remove all elements of a previously configured list, set this value equal to an empty list ([]) or use the terraform taint command to trigger recreation. | `list(any)` | `[]` | no |
 | tags | Additional tags (e.g. map(`BusinessUnit`,`XYZ`). | `map(any)` | `{}` | no |
 | ttl | Time to live. | `number` | `600` | no |
 | validate\_certificate | Set to false to prevent the validation of a acm certificate. | `bool` | `false` | no |
@@ -154,7 +155,7 @@ module "acm" {
 
 
 ## Testing
-In this module testing is performed with [terratest](https://github.com/gruntwork-io/terratest) and it creates a small piece of infrastructure, matches the output like ARN, ID and Tags name etc and destroy infrastructure in your AWS account. This testing is written in GO, so you need a [GO environment](https://golang.org/doc/install) in your system.
+In this module testing is performed with [terratest](https://github.com/gruntwork-io/terratest) and it creates a small piece of infrastructure, matches the output like ARN, ID and Tags name etc and destroy infrastructure in your AWS account. This testing is written in GO, so you need a [GO environment](https://golang.org/doc/install) in your system. 
 
 You need to run the following command in the testing folder:
 ```hcl
@@ -163,7 +164,7 @@ You need to run the following command in the testing folder:
 
 
 
-## Feedback
+## Feedback 
 If you come accross a bug or have any feedback, please log it in our [issue tracker](https://github.com/clouddrove/terraform-aws-acm/issues), or feel free to drop us an email at [[email protected]](mailto:[email protected]).
 
 If you have found it worth your time, go ahead and give us a ★ on [our GitHub](https://github.com/clouddrove/terraform-aws-acm)!