updating readme and including images

Author: ssh-juan

README.md

@@ -1,2 +1,7 @@
-# Pipeline Terraform on GitHub Actions
-This repo has all the setup to it.
+# Terraform Pipeline AWS on GitHub Actions
+![repo_logo](imgs/logo2.jpg)  
+This repo has the setup to build an EC2 Instance.
+* **Obs**.: It reuses the setup of a VPC previously created.
+
+## Pipeline Structure
+![pipeline_structure](imgs/pipeline_structure2.jpg)