Update README.md

Author: debovema

README.md

@@ -1 +1,24 @@
-# scaleway-cloud-init
+# Scaleway cloud-init demo using Terraform
+
+## Usage
+
+1. Retrieve your organization and token and export them:
+```
+export SCALEWAY_ORGANIZATION=<REDACTED>
+export SCALEWAY_TOKEN=<REDACTED>
+```
+
+2. Initialize Terraform
+```
+terraform init
+```
+
+3. Apply default plan
+```
+terraform apply
+```
+
+4. SSH to the (first) created host
+```
+ssh -i ~/.ssh/scaleway root@$(terraform output --json | jq -r '.public_ips.value[0]')
+```