Add support for content as first argument for SubtitleComponent

app/components/bulma/subtitle_component.rb

@@ -2,8 +2,12 @@
 
 module Bulma
   class SubtitleComponent < Component
+    def initialize(text = nil)
+      @text = text
+    end
+
     def call
-      content_tag :p, nil, class: "subtitle"
+      content_tag :p, @text, class: "subtitle"
     end
   end
 end

spec/components/bulma/subtitle_component_spec.rb

@@ -6,4 +6,10 @@
 
     expect(page).to have_css "p.subtitle"
   end
+
+  it "renders content provided as first argument" do
+    render_inline(described_class.new("Subtitle"))
+
+    expect(page).to have_content "Subtitle"
+  end
 end