Comment about Datasetrefresh

[VolueHelge]

Hi,

Thank you for for this amazing project, @RuiRomano!

It was very much ready out of the box, following your instructions per readme.md
use Azure Functions, and only had a few things I needed to customize:

• I wanted a report page for Dataset Refreshes in the same report as the other stuff. That led to some tinkering like getting PowerQuery snippets, measures and calculated columns from the refreshes template (which was configured for disk as source) and merging it into the template for blobsource.
• Dataset refreshes uses a non-admin API, which means the service principal needs to be admin/member of the workspaces where refreshes should be monitored. (this is natural, but was not commented in the readme).
  PS: In my setup, service principal cannot access the standard API to get dataset refreshes by having a workspace role through a group. Has to have the role directly.