Fix branch to init.d & nginx config

doc/installation.md

@@ -88,7 +88,7 @@ Create a user for GitLab:
 Download the init script (will be /etc/init.d/gitlab_ci):
-    sudo wget https://raw.github.com/gitlabhq/gitlab-ci/master/lib/support/init.d/gitlab_ci -P /etc/init.d/
+    sudo wget https://raw.github.com/gitlabhq/gitlab-ci/2-1-stable/lib/support/init.d/gitlab_ci -P /etc/init.d/
     sudo chmod +x /etc/init.d/gitlab_ci
 Make GitLab start on boot:
@@ -113,7 +113,7 @@ Start your GitLab instance:
 Download an example site config:
-    sudo wget https://raw.github.com/gitlabhq/gitlab-ci/master/lib/support/nginx/gitlab_ci -P /etc/nginx/sites-available/
+    sudo wget https://raw.github.com/gitlabhq/gitlab-ci/2-1-stable/lib/support/nginx/gitlab_ci -P /etc/nginx/sites-available/
     sudo ln -s /etc/nginx/sites-available/gitlab_ci /etc/nginx/sites-enabled/gitlab_ci
 Make sure to edit the config file to match your setup: