Added a new option auto_reload_on_write to allow users to disable it for performance reasons (#956)

README.md

@@ -40,15 +40,16 @@ Note that options under the `g:` command should be set **BEFORE** running the se
 -- following options are the default
 -- each of these are documented in `:help nvim-tree.OPTION_NAME`
 require'nvim-tree'.setup {
-  disable_netrw       = true,
-  hijack_netrw        = true,
-  open_on_setup       = false,
-  ignore_ft_on_setup  = {},
-  auto_close          = false,
-  open_on_tab         = false,
-  hijack_cursor       = false,
-  update_cwd          = false,
-  update_to_buf_dir   = {
+  disable_netrw        = true,
+  hijack_netrw         = true,
+  open_on_setup        = false,
+  ignore_ft_on_setup   = {},
+  auto_close           = false,
+  auto_reload_on_write = true,
+  open_on_tab          = false,
+  hijack_cursor        = false,
+  update_cwd           = false,
+  update_to_buf_dir    = {
     enable = true,
     auto_open = true,
   },