update some deisng parameters and add new cases

lib/feather_case_wizard/cli.rb

@@ -5,18 +5,18 @@ module FeatherCaseWizard
     def initialize(ui: HighLine.new, cases_root: CASES_ROOT,
                    model_source: MODEL_SOURCE, renderer_source: RENDERER_SOURCE,
                    toolchain: Toolchain.new)
-      @ui = ui
+      @ui = PromptingUI.wrap(ui)
       @cases_root = Pathname(cases_root)
       @model_source = Pathname(model_source)
       @renderer_source = Pathname(renderer_source)
       @toolchain = toolchain
-      @wizard = Wizard.new(ui: ui)
+      @wizard = Wizard.new(ui: @ui)
     end
 
     def run
       @ui.say(@ui.color("Feather Case Wizard", :bold))
       loop do
-        action = @ui.choose("\nWhat would you like to do?") do |menu|
+        action = @ui.choose("What would you like to do?") do |menu|
           menu.choice("Create a new case") { :create }
           menu.choice("Edit an existing case") { :edit }
           menu.choice("Rebuild an existing case") { :rebuild }