-nnoremap <leader>v :NERDTreeToggle<CR>
-nnoremap <silent> <Leader>+ :vertical resize +5<CR>
-nnoremap <silent> <Leader>- :vertical resize -5<CR>
+nnoremap <leader>n :NERDTreeToggle<CR>
+nnoremap <silent> <Leader>+ :resize +5<CR>
+nnoremap <silent> <Leader>- :resize -5<CR>
+nnoremap <silent> <Leader>v+ :vertical resize +5<CR>
+nnoremap <silent> <Leader>v- :vertical resize -5<CR>