docs snapshot for crossplane version `master`

docs/master/getting-started/install-configure.md

@@ -373,14 +373,22 @@ See [Install] and [Configure] docs for installing alternate versions and more
 detailed instructions.
 
 ## Uninstall Provider
+Let's check whether there are any managed resources before deleting the provider.
+```
+kubectl get managed
+```
+
+If there are any, please delete them first so you don't lose track of them.
+
 ```
 kubectl delete -f provider.yaml
-kubectl delete secret -n crossplane-system --all
 ```
 
 ## Uninstall Crossplane
 ```
 helm delete crossplane --namespace crossplane-system
+
+kubectl delete namespace crossplane-system
 ```
 
 <!-- Named Links -->

docs/master/getting-started/run-applications.md

@@ -55,6 +55,14 @@ metadata:
 spec:
   definitionRef:
     name: containerizedworkloads.core.oam.dev
+---
+apiVersion: core.oam.dev/v1alpha2
+kind: WorkloadDefinition
+metadata:
+  name: postgresqlinstancerequirements.database.example.org
+spec:
+  definitionRef:
+    name: postgresqlinstancerequirements.database.example.org
 ``` 
 Run the following command to add support for all the workloads and traits required
 by this guide:
@@ -489,6 +497,11 @@ kubectl delete -f https://raw.githubusercontent.com/crossplane/crossplane/master
 kubectl delete -f https://raw.githubusercontent.com/crossplane/crossplane/master/docs/snippets/run/definitions.yaml
 ```
 
+To uninstall the Crossplane OAM Addon:
+```console
+helm delete addon-oam-kubernetes-local --namespace crossplane-system
+```
+
 [Open Application Model]: https://oam.dev/
 [publishing infrastructure]: publish-infrastructure.md
 [Service Tracker Diagram]: run-applications-diagram.jpg