diff --git a/bin/rocco b/bin/rocco
index 437c84c..92bc820 100755
--- a/bin/rocco
+++ b/bin/rocco
@@ -22,13 +22,9 @@ rescue LoadError
   raise
 end
 
-rocco =
-  Rocco.new(ARGV[0]) do
-    if $stdin.tty?
-      File.read(ARGV[0])
-    else
-      $stdin.read
-    end
-  end
-
-$stdout.write(rocco.to_html)
+ARGV.each do |filename|
+  rocco = Rocco.new(filename)
+  dest = File.basename(filename, '.rb') + '.html'
+  warn "rocco: #{filename} -> #{dest}"
+  File.open(dest, 'wb') { |fd| fd.write(rocco.to_html) }
+end
diff --git a/lib/rocco.rb b/lib/rocco.rb
index 929320a..78bb3b9 100644
--- a/lib/rocco.rb
+++ b/lib/rocco.rb
@@ -30,9 +30,20 @@
 
 #### Prerequisites
 
-# The RDiscount library is required for Markdown processing.
+# The [rdiscount](http://github.com/rtomayko/rdiscount) library is
+# required for Markdown processing.
 require 'rdiscount'
 
+# We use [{{ mustache }}](http://defunkt.github.com/mustache/) for
+# templating.
+require 'mustache'
+
+# Code is run through [Pygments](http://pygments.org/) for syntax
+# highlighting. Fail fast if we can't find the `pygmentize` program.
+if ! ENV['PATH'].split(':').any? { |dir| File.exist?("#{dir}/pygmentize") }
+  fail "Pygments is required for syntax highlighting"
+end
+
 #### Public Interface
 
 # `Rocco.new` takes a source `filename` and an optional `block`.
@@ -48,7 +59,7 @@ class Rocco
       else
         File.read(filename)
       end
-    # Jump right into parsing and highlighting.
+    # Parsing and highlighting
     @sections = highlight(parse(@data))
   end