Update guide from 6.0 to 7.1

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

doc/update/6.0-to-7.0.md → doc/update/6.0-to-7.1.md

-# From 6.0 to 7.0
+# From 6.0 to 7.1
 ## Deprecations
-The 'Wall' feature has been removed in GitLab 7.0. Existing wall comments will remain stored in the database after the upgrade.
+The 'Wall' feature has been removed in GitLab 7.1. Existing wall comments will remain stored in the database after the upgrade.
 ## Global issue numbers
@@ -32,7 +32,7 @@ sudo -u git -H git fetch --all
 For GitLab Community Edition:
 ```bash
-sudo -u git -H git checkout 7-0-stable
+sudo -u git -H git checkout 7-1-stable
 ```
 OR
@@ -40,7 +40,7 @@ OR
 For GitLab Enterprise Edition:
 ```bash
-sudo -u git -H git checkout 7-0-stable-ee
+sudo -u git -H git checkout 7-1-stable-ee
 ```
@@ -89,12 +89,12 @@ 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 7-0-stable:config/gitlab.yml.example
+git diff 6-0-stable:config/gitlab.yml.example 7-1-stable:config/gitlab.yml.example
 ```
-* 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.
+* Make `/home/git/gitlab/config/gitlab.yml` the same as https://gitlab.com/gitlab-org/gitlab-ce/blob/7-1-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/7-1-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/7-1-stable/lib/support/nginx/gitlab but with your settings.
 * Copy rack attack middleware config
 ```bash