Add PDF rendering (though not with the slide format

Author: emmanuelbernard

Gemfile

@@ -2,10 +2,14 @@
 # bundle install
 source 'https://rubygems.org'
 gem 'asciidoctor', '~>1.5.1'
-#gem 'haml', '~>4.0.0'
-#gem 'tilt', '~>2.0.0'
+gem 'haml', '~>4.0.0'
+gem 'tilt', '~>2.0.0'
 gem 'slim', '~>2.0.0'
-gem 'thread_safe', '~> 0.1.3'
+#gem 'thread_safe', '~> 0.1.3'
+gem 'asciidoctor-pdf', '~>1.5.0.alpha.6'
+#gem 'asciidoctor-pdf', :git => '[email protected]:asciidoctor/asciidoctor-pdf.git'
+gem 'coderay', '1.1.0'
+##gem 'thread-safe', '0.2.0'
 
 # guarding
 gem 'guard'

Rakefile

@@ -58,6 +58,12 @@ task :guard do
   system "bundle exec guard"
 end
 
+task :pdf do
+  cmd = "bundle exec asciidoctor-pdf presentation.adoc"
+  msg cmd
+  system cmd or raise "ERROR: Running Asciidoctor PDF failed."
+end
+
 # Execute Asciidoctor
 def run_asciidoctor(args)
   cmd = "bundle exec asciidoctor #{args}"