documentation tweaks

README

@@ -89,6 +89,8 @@ This driver uses the MAC address finder found at
 http://codeforpeople.com/lib/ruby/macaddr/macaddr-1.0.0/lib/macaddr.rb, which
 uses Ruby's license (see http://codeforpeople.com/lib/license.txt).
 
+--
 # Local Variables:
 # mode:rdoc
 # End:
+++

Rakefile

@@ -8,7 +8,8 @@ Rake::TestTask.new do |t|
   t.test_files = FileList['tests/test*.rb']
 end
 
+desc "Generate documentation"
 task :rdoc do
   FileUtils.rm_rf('doc')
-  system "rdoc --main README README `find lib -name '*.rb'`"
+  system "rdoc --main README --inline-source --quiet README `find lib -name '*.rb'`"
 end