Update SlackNotifier payload formatting

Author: newbishme

config/notification_types.yml

@@ -3,4 +3,4 @@
   :description: 'Send a notification to an email address, or a comma-separated list of email addresses.'
 1:
   :name: 'slack'
-  :description: '*NOT IMPLEMENTED* Send a notification to a Slack channel or name.'
+  :description: 'Send a notification to a Slack webhook endpoint.'

lib/slack_notifier.rb

@@ -1,14 +1,16 @@
+require 'json'
+
 class SlackNotifier
   def initialize(webhook, project_id, commit_hash, audit_result)
     project = Projects[id: project_id]
     @project_name = project.name
     @commit_hash = commit_hash
-    @audit_result = audit_result
+    @audit_result = JSON.pretty_generate(audit_result) || {}
     @webhook = webhook
   end
 
   def notify
     notifier = Slack::Notifier.new @webhook
-    notifier.ping "Commit hash #{@commit_hash} of the project #{@project_name} has been detected to violate #{@audit_result}."
+    notifier.ping "Commit hash [#{@commit_hash}](https://#{@project_name}/commit/#{commit_hash}) of the project #{@project_name} has been detected to violate the following:\n#{@audit_result}\n"
   end
 end