Added array argument

Author: dmasur

Readme.mdown

@@ -56,6 +56,7 @@ See [Google Analytics Tracking Methods](https://developers.google.com/analytics/
 tracker_methods = {
   :setDomainName => "example.com", # String argument
   :setAllowLinker => true, # Boolean argument
+  :require => ['inpage_linkid', '//www.google-analytics.com/plugins/ga/inpage_linkid.js'] # Array argument (will be splattered)
   :clearOrganic => "" # No argument
 }
 ```

lib/split/analytics.rb

@@ -59,6 +59,10 @@ def insert_tracker_methods(tracker_methods)
             when FalseClass
               # Boolean argument tracker method
               arr << "_gaq.push(['" + "_" + "#{k}', #{v}]);"
+            when Array
+              # Array argument tracker method
+              values = v.map { |value| "'#{value}'" }.join(', ')
+              arr << "_gaq.push(['" + "_" + "#{k}', #{values}]);"
             end
           end
         end