add view.indent_markers (#1134)

README.md

@@ -38,7 +38,6 @@ Note that options under the `g:` command should be set **BEFORE** running the se
 These are being migrated to the setup function incrementally, check [this issue](https://github.com/kyazdani42/nvim-tree.lua/issues/674) if you encounter any problems related to configs not working after update.
 ```vim
 " vimrc
-let g:nvim_tree_indent_markers = 1 "0 by default, this option shows indent markers when folders are open
 let g:nvim_tree_git_hl = 1 "0 by default, will enable file highlight for git attributes (can be used without the icons).
 let g:nvim_tree_highlight_opened_files = 1 "0 by default, will enable folder and file icon highlight for opened files/directories.
 let g:nvim_tree_root_folder_modifier = ':~' "This is the default. See :help filename-modifiers for more options
@@ -59,7 +58,7 @@ let g:nvim_tree_show_icons = {
 "1 by default, notice that if 'files' is 1, it will only display
 "if nvim-web-devicons is installed and on your runtimepath.
 "if folder is 1, you can also tell folder_arrows 1 to show small arrows next to the folder icons.
-"but this will not work when you set indent_markers (because of UI conflict)
+"but this will not work when you set renderer.indent_markers.enable (because of UI conflict)
 
 " default will show icon by default if no icon is provided
 " default shows no icon by default
@@ -144,6 +143,16 @@ require'nvim-tree'.setup { -- BEGIN_DEFAULT_OPTS
       },
     },
   },
+  renderer = {
+    indent_markers = {
+      enable = false,
+      icons = {
+        corner = "└ ",
+        edge = "│ ",
+        none = "  ",
+      },
+    },
+  },
   hijack_directories = {
     enable = true,
     auto_open = true,