Added steps

README.md

+**Steps to setup E2E deployment using Jenkins, Ansible, Docker Swarm**
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+**Pre-Requisite:** Dockerfile for the service should be there. 
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+The following steps are to be followed with some modifications.
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+<https://drive.google.com/file/d/1Bi8tE-sP0mTkhsVGK0NtCt_dHZmMyJmw/view?ts=6329b80c>
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+- During Jenkins installation, after copying the jobs **chown** the **/var/lib/jenkins/jobs/** to **jenkins user**
+- In the elastic search configuration, update the elastic search file as per your cluster needs
+- In the Install **Docker Compose** section, run **docker swarm init** before issuing other commands
+- When the Jenkins is up and ready to go, we have to take care of the following
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+- Update **“docker-server”** URL in Jenkins Jobs to pull and push images in build jobs
+- Add ssh keys for your server from the Jenkins server before using ansible playbooks
+- Populate the environment variables for ansible-playbooks in Deploy jobs of Jenkins
+- Update the Nginx conf files according to the services of your application
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+- **Gotcha:** React environment variables are pushed during the build, so runtime docker environment variables will not be picked up by React Apps. Therefore, configure the Dockerfiles accordingly and builds accordingly. 
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