Merge pull request #443 from stiller-leser/driverInstallationUpdate

#440 - Updating driver installation documentation

Author: k8s-ci-robot

docs/kubernetes/user-guides/driver-install.md

@@ -2,15 +2,20 @@
 
 ## Install Driver
 
-1. [One-time per project] Create GCP service account for the CSI driver and set required roles
+1. Clone the driver to your local machine
+```
+$ git clone https://github.com/kubernetes-sigs/gcp-compute-persistent-disk-csi-driver $GOPATH/src/sigs.k8s.io/gcp-compute-persistent-disk-csi-driver
+```
+
+2. [One-time per project] Create GCP service account for the CSI driver and set required roles
 ```
 $ PROJECT=your-project-here                       # GCP project
 $ GCE_PD_SA_NAME=my-gce-pd-csi-sa                 # Name of the service account to create
 $ GCE_PD_SA_DIR=/my/safe/credentials/directory    # Directory to save the service account key
 $ ./deploy/setup-project.sh
 ```
 
-2. Deploy driver to Kubernetes Cluster
+3. Deploy driver to Kubernetes Cluster
 ```
 $ GCE_PD_SA_DIR=/my/safe/credentials/directory    # Directory to get the service account key
 $ GCE_PD_DRIVER_VERSION=stable                    # Driver version to deploy