Merge pull request #1 from SOFware/update-readme

Update readme to include missing steps

README.md

@@ -14,6 +14,20 @@ Add to your `spec_helper.rb` or `rails_helper.rb`:
 
 ```
 require "chat_notifier/rspec_formatter"
+
+config.add_formatter "ChatNotifier::RspecFormatter" if ENV["CI"]
+```
+
+Add to your config/application.rb within your namespaced module
+
+```
+  def self.sha
+    `git rev-parse --short HEAD`.chomp
+  end
+
+  def self.branch
+    `git branch --show-current`.chomp
+  end
 ```
 
 ### Debug your Slack setup
@@ -22,6 +36,7 @@ Create rake task to test the connection to your Slack channel
 
 ```ruby
 namespace :chat_notifier do
+  desc "Tests chat notifier"
   task debug: :environment do
     unless ENV["SLACK_WEBHOOK_URL"]
       puts "You MUST set the environment variables for:\nSLACK_WEBHOOK_URL"