* Replaced Microsoft Flow with Azure Logic Apps
* Update README.md
* Replaced the '@microsoft/sp-client-preview ' package with '@microsoft/sp-webpart-base' for the BaseClientSideWebPart definition according to the SPFx Drop 5 release notes (https://github.com/sharepoint/sp-dev-docs/wiki/Release-Notes-Drop-5)
Added a warning in the deployment script if the service bus namespace is not found in the subscription.
Added debugging options in the iisnode.yml configuration file.