Add comments association

app/models/asciicast.rb

@@ -7,6 +7,8 @@ class Asciicast < ActiveRecord::Base
   validates :stdout, :stdout_timing, :presence => true
   validates :terminal_columns, :terminal_lines, :duration, :presence => true
 
+  has_many :comments, :order => :created_at
+
   def meta=(file)
     data = JSON.parse(file.tempfile.read)