done with 4.1. Version to 4.2.0pre :)

Author: dzaporozhets

VERSION

@@ -1 +1 @@
-4.1.0rc1
+4.2.0pre

doc/install/installation.md

@@ -190,10 +190,10 @@ See `doc/install/databases.md`
     cd /home/gitlab/gitlab
 
     # Checkout to stable release
-    sudo -u gitlab -H git checkout 4-0-stable
+    sudo -u gitlab -H git checkout 4-1-stable
 
 **Note:**
-You can change `4-0-stable` to `master` if you want the *bleeding edge* version, but
+You can change `4-1-stable` to `master` if you want the *bleeding edge* version, but
 do so with caution!
 
 ## Configure it