github.rb in danger-2.0.0

- old
+ new

@@ -34,10 +34,14 @@
 
       def markdown_parser
         @markdown_parser ||= Redcarpet::Markdown.new(Redcarpet::Render::HTML, no_intra_emphasis: true)
       end
 
+      def pr_diff
+        @pr_diff ||= client.pull_request(ci_source.repo_slug, ci_source.pull_request_id, accept: 'application/vnd.github.v3.diff')
+      end
+
       def setup_danger_branches
         # we can use a github specific feature here:
         base_commit = self.pr_json[:base][:sha]
         head_commit = self.pr_json[:head][:sha]
 
@@ -105,10 +109,10 @@
                                       errors: errors,
                                  details_url: comment_result['html_url'])
       end
 
       def submit_pull_request_status!(warnings: [], errors: [], details_url: [])
-        status = (errors.count == 0 ? 'success' : 'failure')
+        status = (errors.count.zero? ? 'success' : 'failure')
         message = generate_github_description(warnings: warnings, errors: errors)
 
         latest_pr_commit_ref = self.pr_json[:head][:sha]
 
         if latest_pr_commit_ref.empty? || latest_pr_commit_ref.nil?