Create README.md

Author: jyoti1998-gehlot

beginners/aws/modules/application_load_balancer/README.md

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+# application_load_balancer
+  
+These templates implements a application load balancer, and associated necessary steps require for loadbalancing. We used below services : 
+
+- Security groups for instances and loadbalancer
+- Target grout attachment for instances
+- Template for launching instances
+- Load balancer
+
+
+-- Mention your region, secret and access keys, vpc_id, subnet_ids and ami_id required in the templates.
+
+To run these templates, clone the repository and run `terraform apply` within its own directory.
+
+For example:
+
+```tf
+$ git clone https://github.com/collabnix/terraform.git
+$ cd terraform/beginner/aws/modules/application_load_balancer
+$ terraform apply
+```