Update references to 5-3-stable in install guide

doc/install/installation.md

@@ -153,7 +153,7 @@ To setup the MySQL/PostgreSQL database and dependencies please see [`doc/install
     sudo -u git -H git checkout 5-4-stable
 **Note:**
-You can change `5-3-stable` to `master` if you want the *bleeding edge* version, but do so with caution!
+You can change `5-4-stable` to `master` if you want the *bleeding edge* version, but do so with caution!
 ## Configure it
@@ -357,10 +357,10 @@ GitLab uses [Omniauth](http://www.omniauth.org/) for authentication and already
 These steps are fairly general and you will need to figure out the exact details from the Omniauth provider's documentation.
-* Add `gem "omniauth-your-auth-provider"` to the [Gemfile](https://github.com/gitlabhq/gitlabhq/blob/5-3-stable/Gemfile#L18)
+* Add `gem "omniauth-your-auth-provider"` to the [Gemfile](https://github.com/gitlabhq/gitlabhq/blob/5-4-stable/Gemfile#L19)
 * Run `sudo -u git -H bundle install` to install the new gem(s)
-* Add provider specific configuration options to your `config/gitlab.yml` (you can use the [auth providers section of the example config](https://github.com/gitlabhq/gitlabhq/blob/5-3-stable/config/gitlab.yml.example#L53) as a reference)
-* Add icons for the new provider into the [vendor/assets/images/authbuttons](https://github.com/gitlabhq/gitlabhq/tree/5-3-stable/vendor/assets/images/authbuttons) directory (you can find some more popular ones over at https://github.com/intridea/authbuttons)
+* Add provider specific configuration options to your `config/gitlab.yml` (you can use the [auth providers section of the example config](https://github.com/gitlabhq/gitlabhq/blob/5-4-stable/config/gitlab.yml.example#L113) as a reference)
+* Add icons for the new provider into the [vendor/assets/images/authbuttons](https://github.com/gitlabhq/gitlabhq/tree/5-4-stable/vendor/assets/images/authbuttons) directory (you can find some more popular ones over at https://github.com/intridea/authbuttons)
 * Restart GitLab
 ### Examples