tabedit -> tab split to avoid extraneous unnamed buffer

README.md

@@ -51,7 +51,7 @@ Customization
 ```vim
 " This is the default extra key bindings
 let g:fzf_action = {
-  \ 'ctrl-t': 'tabedit',
+  \ 'ctrl-t': 'tab split',
   \ 'ctrl-x': 'split',
   \ 'ctrl-v': 'vsplit' }
 ```

plugin/fzf.vim

@@ -54,7 +54,7 @@ function! s:fzf(opts, bang)
 endfunction
 
 let s:default_action = {
-  \ 'ctrl-t': 'tabedit',
+  \ 'ctrl-t': 'tab split',
   \ 'ctrl-x': 'split',
   \ 'ctrl-v': 'vsplit' }