Added .env loading command and tf vars sample

shared/README.md

@@ -37,6 +37,12 @@ export TF_VAR_env=dev
 export TF_VAR_location=eastus
 ```
 
+After saving the file set environment using:
+
+``` bash
+. .env
+```
+
 Alternative use the variable.tf files in the directories and add the default key on the file as shown on the example below:
 
 ``` json
@@ -45,4 +51,20 @@ variable "location" {
     description = "The name of the target location"
     default = "eastus"
 }
+variable "env" {
+    type = "string",
+    description = "The short name of the target env (i.e. dev, staging, or prod)"
+    defailt = "dev"
+}
+variable "org" {
+    type = "string",
+    description = "The short name of the organization"
+    default = "cse"
+}
+variable "app_name" {
+    type = "string",
+    description = "The short name of the application"
+    default = "cblt"
+}
+
 ```