bin/shorturl in shorturl-0.8.1 vs bin/shorturl in shorturl-0.8.2

@@ -4,10 +4,20 @@
 require "shorturl"
 require "optparse"
 
 include WWW
 
+class Array
+  def pick
+    self[rand(size)]
+  end
+end
+
+def random_service
+  ShortURL.valid_services.pick
+end
+
 def service_list
   ShortURL.valid_services.map { |s| s.to_s }.sort.join("\n\t")
 end
 
 def main
@@ -25,10 +35,12 @@
     puts op
     exit(-1)
   end
   
   url = ARGV.shift
-  shorturl = if ShortURL.valid_services.include?(service)
+  shorturl = if service == :random
+               ShortURL.shorten(url, random_service)
+             elsif ShortURL.valid_services.include?(service)
                ShortURL.shorten(url, service)
              else
                puts "Invalid service"
                exit(-1)
              end