Change Neo Tree key binding to `ft` and configure the mode

README.md

@@ -466,6 +466,7 @@ Key Binding   |                 Description
 `<SPC> f i`   | open your `init.el` file
 `<SPC> f s`   | save a file
 `<SPC> f S`   | save all files
+`<SPC> f t`   | toggle file tree side bar using [neotree][neotree]
 `<SPC> f y`   | show current file absolute path in the minibuffer
 
 #### Bookmarks
@@ -785,7 +786,6 @@ Projects management commands (start with `p`):
 
     Key Binding   |                 Description
 ------------------|------------------------------------------------------------
-`<SPC> p b`       | toggle the [neotree][neotree] navigation buffer on the side
 `<SPC> p C`       | invalidate the cache of `projectile`
 `<SPC> p d`       | open a `dired` buffer at the root of the project
 `<SPC> p f`       | open a file of the project using `helm`

spacemacs/packages.el

@@ -1091,8 +1091,13 @@ inserted in the buffer (if it is not read-only)."
   (use-package neotree
     :defer t
     :init
+    (progn 
+      (setq neo-create-file-auto-open t
+            neo-dont-be-alone t
+            neo-banner-message "File Tree browser"
+            neo-smart-open t))
     (progn
-      (evil-leader/set-key "pb" 'neotree-toggle))))
+      (evil-leader/set-key "ft" 'neotree-toggle))))
 
 (defun spacemacs/init-org ()
   (use-package org