Destroy depenedent comments on post; update JSON API resources gem

Author: Bill Heaton

Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: https://github.com/cerebris/jsonapi-resources.git
-  revision: e385293a7b5bbf5a483a4bef9bf7f78dc174c49f
+  revision: 7335d833e56c9eece47166b8d0e70e658c87f47f
   specs:
     jsonapi-resources (0.3.3)
       rails (>= 4.0)

app/models/post.rb

@@ -1,6 +1,6 @@
 class Post < ActiveRecord::Base
   belongs_to :author
-  has_many :comments, -> { where(approved: true) }
+  has_many :comments, -> { where(approved: true) }, :dependent => :destroy
 
   validates :slug, uniqueness: true