update README with examples

README.md

@@ -1,2 +1,42 @@
 # ecs-task-protection
-Small Go module to enable/disable protection for an ECS task
+[![Go](https://github.com/Thumbscrew/ecs-task-protection/actions/workflows/go.yml/badge.svg)](https://github.com/Thumbscrew/ecs-task-protection/actions/workflows/go.yml)[![API Reference](https://img.shields.io/badge/api-reference-blue.svg)](https://pkg.go.dev/github.com/Thumbscrew/ecs-task-protection)
+
+Small Go module to enable/disable protection for an ECS task.
+
+## Example usage
+
+```go
+// create ECS client
+ecsClient := ecs.New(ecs.Options{})
+
+// create task protection client
+protClient := ecstp.NewClient(ecsClient)
+
+// enable protection
+output, err := protClient.UpdateTaskProtection(context.Background(), &ecstp.UpdateTaskProtectionInput{
+    Protect: true,
+})
+
+// disable protection
+out, err := protClient.UpdateTaskProtection(context.Background(), &ecstp.UpdateTaskProtectionInput{
+    Protect: false,
+})
+
+// enable protection with 60 minute expiry
+out, err := protClient.UpdateTaskProtection(context.Background(), &ecstp.UpdateTaskProtectionInput{
+    Protect: true,
+    ExpiresInMinutes: aws.Int32(60),
+})
+
+// get Cluster and TaskARN metadata
+body, err := protClient.GetTaskArn(context.Background())
+
+// enable protection with provided metadata
+out, err := protClient.UpdateTaskProtection(context.Background(), &ecstp.UpdateTaskProtectionInput{
+    Metadata: &ecstp.MetadataBody{
+        Cluster: "test-cluster",
+        TaskARN: "arn:aws:ecs:eu-west-2:123456789012:task/example/taskid",
+    },
+    Protect: true,
+})
+```