Create 6.0-to-7.0 update guide

doc/update/6.0-to-6.8.md → doc/update/6.0-to-7.0.md

-# From 6.0 to 6.8
-
-**In 6.1 we remove a lot of deprecated code.**
-
-**You should update to 6.0 before installing 6.1 or higher so all the necessary conversions are run.**
+# From 6.0 to 7.0
 
 ## Deprecations
 
@@ -34,7 +30,7 @@ sudo -u git -H git fetch --all
 For GitLab Community Edition:
 
 ```bash
-sudo -u git -H git checkout 6-8-stable
+sudo -u git -H git checkout 7-0-stable
 ```
 
 OR
@@ -42,7 +38,7 @@ OR
 For GitLab Enterprise Edition:
 
 ```bash
-sudo -u git -H git checkout 6-8-stable-ee
+sudo -u git -H git checkout 7-0-stable-ee
 ```
 
 
@@ -91,12 +87,12 @@ sudo chmod u+rwx,g+rx,o-rwx /home/git/gitlab-satellites
 TIP: to see what changed in gitlab.yml.example in this release use next command: 
 
 ```
-git diff 6-0-stable:config/gitlab.yml.example 6-8-stable:config/gitlab.yml.example
+git diff 6-0-stable:config/gitlab.yml.example 7-0-stable:config/gitlab.yml.example
 ```
 
-* Make `/home/git/gitlab/config/gitlab.yml` the same as https://gitlab.com/gitlab-org/gitlab-ce/blob/6-8-stable/config/gitlab.yml.example but with your settings.
-* Make `/home/git/gitlab/config/unicorn.rb` the same as https://gitlab.com/gitlab-org/gitlab-ce/blob/6-8-stable/config/unicorn.rb.example but with your settings.
-* Make `/etc/nginx/sites-available/nginx` the same as https://gitlab.com/gitlab-org/gitlab-ce/blob/6-8-stable/lib/support/nginx/gitlab but with your settings.
+* Make `/home/git/gitlab/config/gitlab.yml` the same as https://gitlab.com/gitlab-org/gitlab-ce/blob/7-0-stable/config/gitlab.yml.example but with your settings.
+* Make `/home/git/gitlab/config/unicorn.rb` the same as https://gitlab.com/gitlab-org/gitlab-ce/blob/7-0-stable/config/unicorn.rb.example but with your settings.
+* Make `/etc/nginx/sites-available/nginx` the same as https://gitlab.com/gitlab-org/gitlab-ce/blob/7-0-stable/lib/support/nginx/gitlab but with your settings.
 * Copy rack attack middleware config
 
 ```bash