docs/server.rb in preval-0.2.0 vs docs/server.rb in preval-0.3.0

@@ -2,9 +2,13 @@
 
 require 'bundler/setup'
 require 'preval'
 require 'sinatra'
 
+Preval::Visitors::Arithmetic.enable!
+Preval::Visitors::Loops.enable!
+Preval::Visitors::Micro.enable!
+
 get '/' do
   send_file(File.expand_path('index.html', __dir__))
 end
 
 post '/' do