Rakefile: Copy images to output/; tweak logic.

Rakefile

@@ -1,18 +1,29 @@
+SOURCE_HTML = FileList['text/**/*.html']
+IMAGES = FileList['images/*']
 
+directory "output"
+
+task :images => :output
+task :images => IMAGES do |t|
+  IMAGES.each do |image|
+    cp image, "output"
+  end  
+end
+
+task 'output/all.html' => [:output, :images]
 file 'output/all.html' => FileList['text/**/*.html'] do |t|
   File.open(t.name,'w') do |out|
-    t.prerequisites.sort.each do |source|
+    SOURCE_HTML.sort.each do |source|
       out.puts File.open(source).read
     end
   end  
 end
 
-file 'output/vim-recipes.pdf' => ['output/all.html'] do |t|
+file 'output/vim-recipes.pdf' => 'output/all.html' do |t|
   system("prince #{t.prerequisites.first} #{t.name}")
 end
 
-task :pdf => ['output/vim-recipes.pdf'] do
-end  
+task :pdf => 'output/vim-recipes.pdf'
 
 task :ilinks => ['output/all.html'] do |t|
   require 'hpricot'