Creating README.md file

Author: MiteshSharma

README.md

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+# EksAuth
+
+In this project, we are making API request to EKS cluster with information provided in kubeconfig file and AWS credentials using aws-iam-authenticator.
+
+Needed variables:
+1. certificateAuthorityDataFile: This file contains certificate data which is stored as base64 in kubeconfig file as variable certificate-authority-data. 
+2. clusterName: Name of cluster 
+3. clusterServerUrl: Cluster server url to make request to server
+4. AWS details: Need aws access key, secret and region to authenticate with help of aws-iam-authenticator to authenticate with EKS cluster
+5. clusterId: This is unique cluster identifier. Detail: https://github.com/kubernetes-sigs/aws-iam-authenticator#what-is-a-cluster-id
+
+Once all information is updated in main.go, command to run main.go file:
+
+```
+go run main.go
+```