Merge pull request #137 from github/osowskit/preview

Removing preview media type

Author: Tom Osowski

api/ruby/discovering-resources-for-a-user/discovering_organizations.rb

@@ -2,8 +2,6 @@
 
 Octokit.auto_paginate = true
 
-Octokit.default_media_type = "application/vnd.github.moondragon+json"
-
 # !!! DO NOT EVER USE HARD-CODED VALUES IN A REAL APP !!!
 # Instead, set and test environment variables, like below.
 client = Octokit::Client.new :access_token => ENV["OAUTH_ACCESS_TOKEN"]