doc: Add current demo list to README.md (#219)

README.md

@@ -15,6 +15,18 @@
 
 - Follow: https://developer.hashicorp.com/terraform/tutorials/aws-get-started
 
+## Demo list
+
+| Category | Name | URL | Status |
+|:---|:---|:---|:---|
+| getting-started | EC2 Create Simple Instance |[ec2/create-simple-instance](./getting-started/ec2/create-simple-instance)| ✔️ Done |
+| getting-started | S3 Create Simple Bucket |[s3/create-new-bucket](./getting-started/s3/create-new-bucket)| ✔️ Done |
+| tutorial | S3 Static Website |[s3-static-website](./tutorial/s3-static-website)| ✔️ Done |
+| tutorial | Serverless Basic Application |[serverless-basic-application](./tutorial/serverless-basic-application)| ✔️ Done |
+| tutorial | WordPress Instance With Amazon Lightsail |[wordPress-instance-with-amazon-lightsail](./tutorial/wordPress-instance-with-amazon-lightsail)| ✔️ Done |
+| workshop | AWS 3 tier web application |[aws-3-tier-web](./workshop/aws-3-tier-web)| ✔️ Done |
+| selfhosted | Focalboard App |[selfhosted](./selfhosted/)| In-progress |
+
 ## Contributing
 - See: [CONTRIBUTING.md](https://github.com/tungbq/aws-lab-with-terraform/blob/main/CONTRIBUTING.md). Thanks! 💖
 - Looking for the issue to work on? Check the list of our open [good first issue](https://github.com/tungbq/aws-lab-with-terraform/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22)