默认情况下,NERDCommenter的工作方式如下：
//level1
//level2
//level3
我怎么去这样工作？
//level1 // level2 // level3
从
documentation：
[count]<leader>cl [count]<leader>cb |NERDComAlignedComment|
Same as |NERDComComment| except that the delimiters are aligned down the left side (cl) or both sides (cb).
