Things you may want to cover:

• Ruby version

• System dependencies

• Configuration

• Database creation

• Database initialization

• How to run the test suite

• Services (job queues, cache servers, search engines, etc.)

• Deployment instructions

• ...

Database table/models (M):

Room

• name

Item

• name
• quantity:integer
• price:float
• image_url
• room_id:integer

Controllers (C):

Rooms Items

View (V) -- ReactJS