Update getting started

plugins/active_link.rb

@@ -1,5 +1,3 @@
-require 'pry'
-
 module Jekyll
   class ActiveLinkTag < Liquid::Tag
     def initialize(tag_name, text, token)
@@ -10,8 +8,10 @@ module Jekyll
     end
 
     def render(context)
+      href = Liquid::Template.parse(@href).render context
+      title = Liquid::Template.parse(@title).render context
       cls = @href == context.registers[:page]["url"] ? "class='active'" : ''
-      "<a #{cls} href='#{@href}'>#{@title}</a>"
+      "<a #{cls} href='#{href}'>#{title}</a>"
     end
   end
 end