Document your PowerBI Models with Model Documenter 

A short video about how I have started using the external tool Model Documenter by data-marc.com/ to easily generate end-user documentation about PowerBI Models. See my blog here for a description of how this works. www.datasmart.ie/post/automat...
Steps in Brief
1) Utilise the Description property of PowerBI Objects (Tables, Fields, Measures)
2) Run Model Documenter
3) Publish the Model from Step 2 to a report workspace
4) Create a simple report about your model
5) Include as part of an app.