add stamp text logo

lib/pdf_icons.rb

@@ -24,6 +24,10 @@ module PdfIcons
     StringIO.new(logo_new_data)
   end
 
+  def stamp_logo_io
+    StringIO.new(stamp_logo_data)
+  end
+
   def check_data
     @check_data ||= PATH.join('check.png').read
   end
@@ -39,4 +43,8 @@ module PdfIcons
   def logo_new_data
     @logo_new_data ||= PATH.join('logo_new.png').read
   end
+
+  def stamp_logo_data
+    @stamp_logo_data ||= PATH.join('stamp-logo.png').read
+  end
 end