Add indent markers and remap to refresh file tree

nvim/file-tree.vim

@@ -6,6 +6,7 @@ let g:nvim_tree_width = 20
 let g:nvim_tree_ignore = [ '.git' ]
 let g:nvim_tree_add_trailing = 1
 let g:nvim_tree_quit_on_open = 1
+let g:nvim_tree_indent_markers = 1
 let g:nvim_tree_show_icons = {
     \ 'git': 0,
     \ 'folders': 0,
@@ -14,5 +15,5 @@ let g:nvim_tree_show_icons = {
     \ }
 
 " Remaps
-nnoremap <C-b> :NvimTreeToggle<CR>
-
+nnoremap <leader>b :NvimTreeToggle<CR>
+nnoremap <leader>r :NvimTreeRefresh<CR>