add simple Ruby-based webserver to present recipes

web/server.rb

@@ -0,0 +1,13 @@
+# server.rb
+require 'sinatra'
+require 'htmlentities'
+
+get '/' do
+  `cd ..; echo "(display (html-wrap (cookbook-as-html cookbook)))" | petite -q "batch.scm"`
+end
+
+get '/:ingredient' do
+  ingredient = HTMLEntities.new.decode params['ingredient']
+  puts ingredient
+  `cd ..; echo "(display (html-wrap (cookbook-as-html (recipes-by-ingredients cookbook '(\\"#{ingredient}\\")))))" | petite -q "batch.scm"`
+end