document usage of helm chart from repo

Author: juan.hermosillo@oracle.com

README.md

@@ -249,3 +249,31 @@ Only pull requests from committers that can be verified as having signed the OCA
 ## Introducing a new dependency
 
 Please be aware that pull requests that seek to introduce a new dependency will be subject to additional review.  In general, contributors should avoid dependencies with incompatible licenses, and should try to use recent versions of dependencies.  Standard security vulnerability checklists will be consulted before accepting a new dependency.  Dependencies on closed-source code, including WebLogic Server, will most likely be rejected.
+
+## Use Helm Chart from Github chart repository
+
+Add this repo to Helm installation:
+
+```
+$ helm repo add weblogic-operator https://oracle.github.io/weblogic-kubernetes-operator/charts
+```
+
+Verify repository was added correctly:
+
+````
+$ helm repo list
+NAME           URL
+weblogic-operator    https://oracle.github.io/weblogic-kubernetes-operator/charts
+```
+
+Update with latest information about charts from chart repositories:
+
+```
+$ helm repo update
+```
+
+Install Operator from the repo:
+
+```
+$ helm install helm install weblogic-operator/weblogic-operator --name weblogic-operator
+```