feat: Option for grouping empty directories (#247)

README.md

@@ -34,6 +34,7 @@ let g:nvim_tree_width_allow_resize  = 1 "0 by default, will not resize the tree
 let g:nvim_tree_disable_netrw = 0 "1 by default, disables netrw
 let g:nvim_tree_hijack_netrw = 0 "1 by default, prevents netrw from automatically opening when opening directories (but lets you keep its other utilities)
 let g:nvim_tree_add_trailing = 1 "0 by default, append a trailing slash to folder names
+let g:nvim_tree_group_empty = 1 " 0 by default, compact folders that only contain a single folder into one node in the file tree
 let g:nvim_tree_show_icons = {
     \ 'git': 1,
     \ 'folders': 0,