Add content to How to run Bow OpenAPI

Author: truizlop

Documentation.app/Contents/MacOS/Quick start.playground/Pages/How to run Bow OpenAPI.xcplaygroundpage/Contents.swift

@@ -7,4 +7,15 @@
 /*:
  # How to run Bow OpenAPI
 
+ Bow OpenAPI runs from your terminal with the following command:
+ 
+ ```bash
+ $> bow-openapi --name NetworkClient --schema API.json --output OutputFolder
+ ```
+ 
+ Where:
+ 
+ - `--name`: Name of the resulting Swift package to be consumed from Swift Package Manager.
+ - `--schema`: Path to a JSON or YAML file containing the OpenAPI / Swagger description of your endpoints.
+ - `--output`: Path to the folder where the tool will write the generated files.
  */