Option to prepend another PDF to the PnP PDF (think rules)

bin/svggvs

@@ -95,6 +95,10 @@ module SVGGVS
 
       Pathname(context.session.pdf_target).parent.mkpath
 
+      if context.session.prepend_pdf
+        pages.unshift context.session.prepend_pdf
+      end
+
       system "gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=#{context.session.pdf_target} -dBATCH #{pages.join(" ")}"
     end
 

lib/svggvs/session.rb

@@ -3,7 +3,7 @@ module SVGGVS
     attr_accessor :svg_source, :svg_merged_target, :individual_files_path, :on_card_finished
     attr_accessor :png_files_path, :png_export_width, :pdf_card_size, :pdf_dpi
     attr_accessor :pdf_target, :card_back, :card_size, :target, :post_read_data
-    attr_accessor :card_sheet_identifier
+    attr_accessor :card_sheet_identifier, :prepend_pdf
 
     def initialize
       @index = 0