update structure

doc/install/structure.md

@@ -3,37 +3,23 @@
 This is the directory structure you will end up with following the instructions in the Installation Guide.
     |-- home
-    |   |-- gitlab
+    |   |-- git
     |       |-- .ssh
     |       |-- gitlab
     |       |-- gitlab-satellites
-    |   |-- git
-    |       |-- .gitolite
-    |       |-- .ssh
-    |       |-- bin
-    |       |-- gitolite
+    |       |-- gitlab-shell
     |       |-- repositories
-**/home/gitlab/.ssh**
-  Contains the Gitolite admin key GitLab uses to configure Gitolite.
-**/home/gitlab/gitlab**
+**/home/git/.ssh**
+**/home/git/gitlab**
   This is where GitLab lives.
-**/home/gitlab/gitlab-satellites**
+**/home/git/gitlab-satellites**
   Contains a copy of all repositories with a working tree.
   It's used for merge requests, editing files, etc.
-**/home/git/.ssh**
-  Contains the SSH access configuration managed by Gitolite.
-
-**/home/git/bin**
-  Contains Gitolite executables.
-
-**/home/git/gitolite**
-  This is where Gitolite lives.
-
 **/home/git/repositories**
   Holds all your repositories in bare format.
   This is the place Git uses when you pull/push to your projects.