Update Terraform instructions (#278)

START.md

@@ -87,10 +87,36 @@ Notes:
 
 ### Install via terraform ###
 
+You need to have [terraform](https://www.terraform.io/downloads.html) installed
+on your machine.
+
 #### Default install ####
 
-To install it via terraform, you need to have
-[terraform installed](https://www.terraform.io/downloads.html) on your machine.
+Pre-built binaries easier to install are available when using the Terraform
+[module](https://registry.terraform.io/modules/cristim/autospotting/aws)
+available from the Terraform Registry.
+
+Copy and paste the below snippet into your Terraform configuration:
+
+```hcl
+module "autospotting" {
+  source  = "cristim/autospotting/aws"
+  version = "0.0.9" # this version is subject to change
+}
+```
+
+You can also insert any of the variables you want to override, then:
+
+```shell
+terraform init # fetches required plugin and modules for terraform
+export AWS_DEFAULT_REGION=XXXX
+export AWS_ACCESS_KEY_ID=XXXX
+export AWS_SECRET_ACCESS_KEY=XXXX
+terraform plan
+terraform apply -auto-approve
+```
+
+#### Custom binary installation ####
 
 The `lambda.zip` file can be generated by building it locally using
 `make`(look for it in the `build` directory) but you'll need