Simplify upgrade guide based on 6-4 functionality mentioned by Jacob.

doc/update/6.0-to-6.4.md

@@ -81,7 +81,7 @@ git diff 6-0-stable:config/gitlab.yml.example 6-4-stable:config/gitlab.yml.examp
 ```bash
 sudo -u git -H cp config/initializers/rack_attack.rb.example config/initializers/rack_attack.rb
 ```
-* Uncomment `config.middleware.use Rack::Attack` in `/home/git/gitlab/config/application.rb`
+
 * Set up logrotate
 
 ```bash
@@ -91,9 +91,7 @@ sudo cp lib/support/logrotate/gitlab /etc/logrotate.d/gitlab
 ### 7. Update Init script
 
 ```bash
-sudo rm /etc/init.d/gitlab
-sudo curl --output /etc/init.d/gitlab https://raw.github.com/gitlabhq/gitlabhq/6-4-stable/lib/support/init.d/gitlab
-sudo chmod +x /etc/init.d/gitlab
+sudo cp lib/support/init.d/gitlab /etc/init.d/gitlab
 ```
 
 ### 8. Start application