Merge branch 'main' of github.com:ShipEngine/shipengine-ruby into ENGINE-7190-funding-sources-wallet-errors

Author: ChristianCasado

README.md

@@ -40,7 +40,7 @@ require "shipengine"
 
 api_key = ENV["SHIPENGINE_API_KEY"]
 
-shipengine = ShipEngine.new(api_key)
+shipengine = ShipEngine::Client.new(api_key)
 ```
 
 Contributing