Merge pull request #1346 from ixdy/fix-docs-installing-with-regular-manifests

docs: no need to apply 00-crds.yaml when installing with regular manifests

docs/getting-started/install.rst

@@ -50,16 +50,13 @@ cert-manager runs in:
 
 You can read more about the webhook on the :doc:`webhook document <./webhook>`.
 
-We can now go ahead and install cert-manager. This is a two-stage process where
-we first install the CustomResourceDefinition resources, and then afterwards
-install cert-manager along with the webhook component:
+We can now go ahead and install cert-manager. All resources
+(the CustomResourceDefinitions, cert-manager, and the webhook component)
+are included in a single YAML manifest file:
 
 .. code-block:: shell
 
-   # Install the CustomResourceDefinition resources
-   kubectl apply -f https://raw.githubusercontent.com/jetstack/cert-manager/release-0.6/deploy/manifests/00-crds.yaml
-
-   # Install cert-manager itself
+   # Install the CustomResourceDefinitions and cert-manager itself
    kubectl apply -f https://raw.githubusercontent.com/jetstack/cert-manager/release-0.6/deploy/manifests/cert-manager.yaml
 
 .. note::
@@ -75,7 +72,7 @@ install cert-manager along with the webhook component:
    'permission denied' error when creating some of these resources. This is a
    nuance of the way GKE handles RBAC and IAM permissions, and as such you
    should 'elevate' your own privileges to that of a 'cluster-admin' **before**
-   running the above commands. If you have already run the above commands, you
+   running the above command. If you have already run the above command, you
    should run them again after elevating your permissions::
 
        kubectl create clusterrolebinding cluster-admin-binding \