update README

README.md

@@ -1,11 +1,12 @@
 # ECS Instance Draining on Scale In
 ===================================
 
-Heavily inspired by this AWS [blog post](https://aws.amazon.com/blogs/compute/how-to-automate-container-instance-draining-in-amazon-ecs/), this module deploys resources and code to support ECS Instance Draning to ensure that running tasks are not obliterated by ASG scale-in events.
+Heavily inspired by this AWS [blog post](https://aws.amazon.com/blogs/compute/how-to-automate-container-instance-draining-in-amazon-ecs/), this module deploys resources and code to support ECS Instance Draning and ASG lifecycle hook to ensure that running tasks are not obliterated by ASG scale-in events.
+
+Further details about [AutoScaling Lifecyle Hooks](http://docs.aws.amazon.com/autoscaling/latest/userguide/lifecycle-hooks.html) is available.
 
 ![alt tag](https://s3.amazonaws.com/chrisb/Architecture.png)
 
-Further details about [AutoScaling Lifecyle Hooks](http://docs.aws.amazon.com/autoscaling/latest/userguide/lifecycle-hooks.html) is available.
 
 Module Input Variables
 ----------------------
@@ -24,7 +25,7 @@ resource "aws_autoscaling_group" "ecs" {
 }
 
 module "ecs_instance_draining_on_scale_in" {
-  source = "../../../modules/ecs-instance-draining-on-scale-in"
+  source = "github.com/terraform-community-modules/ecs-instance-draining-on-scale-in"
 
   autoscaling_group_name = "${aws_autoscaling_group.ecs.asg_name}"
   hook_heartbeat_timeout = 1800