Add ability to skip individual slides

README.rdoc

@@ -166,6 +166,10 @@ definition, where tname is one of the following supported transitions:
 
 The transitions are provided by jQuery Cycle plugin. See http://www.malsup.com/jquery/cycle/browser.html to view the effects and http://www.malsup.com/jquery/cycle/adv2.html for how to add custom effects.
 
+Here's a list of other available keywords:
+
+* skip - Skips slides marked with this keyword
+
 You can manage the presentation with the following keys:
 
 * space, cursor right: next slide

lib/showoff.rb

@@ -143,6 +143,9 @@ def <<(s)
       def empty?
         @text.strip == ""
       end
+      def skip?
+        @classes.include? 'skip'
+      end
     end
 
 
@@ -171,7 +174,7 @@ def process_markdown(name, content, static=false, pdf=false)
         end
       end
 
-      slides.delete_if {|slide| slide.empty? }
+      slides.delete_if {|slide| slide.empty? || slide.skip? }
 
       final = ''
       if slides.size > 1

test/basic_test.rb

@@ -24,6 +24,12 @@ def app
     assert_match '<h1>My Presentation</h1>', last_response.body
   end
 
+  test "can skip slides" do
+    get '/slides'
+    assert last_response.ok?
+    assert_no_match /Skipped slide/, last_response.body
+  end
+
   test "can get asset list" do
     get '/assets_needed'
     assert last_response.ok?

test/fixtures/simple/one/01_slide.md

@@ -7,3 +7,9 @@
 * first point
 * second point
 * third point
+
+!SLIDE skip
+
+# Skipped slide
+
+This won't show up