update doc: go back to MRU

README.cn.md

@@ -335,6 +335,23 @@ eval "$(lua /path/to/z.lua --init bash enhanced once echo fzf)"
 注意：该功能在初始化 z.lua 之前，会检测 $PATH 中是否有 fzf 这个程序，有的话才启用。
 
 
+## MRU
+
+以往我们经常使用 `cd -` 命令来回到刚才访问过的目录，而有了 fzf 的帮助，我们可以更高效的来完成这件事情：
+
+
+```bash
+alias zh=`z -t -I .`
+```
+
+首先定义个新的别名 `zh`（回到历史路径的意思），我们使用了 `-t` 参数来告诉 `z.lua` 按照时间戳作为权重进行排序，同时 `-I` 启用 fzf 进行搜索，最后的句号代表任意路径。
+
+那么当我们在命令行敲入 zh 时，就可以用 fzf 选择仅仅呆过的路径了：
+
+![](images/mru.png)
+
+第一列数据代表该路径多少秒以前访问过，第二列是路径名称。此时，你可以试着敲几个字母，用 fzf 的字符串模糊匹配进行定位，或者用光标键的上和下（CTRL+J/K 也可以）来上下移动，最后按回车 cd 过去，或者 ESC 放弃。
+
 
 ## Tips
 

README.md

@@ -352,6 +352,22 @@ With the help of fzf, completion in bash is much easier now.
 
 NOTE: To enable this, command `fzf` must be found in `$PATH` before initialization.
 
+## Most Recently Accessed Path
+
+We always use `cd -` to go back to last accessed directory, but with the help of `fzf` we can achieve this productively:
+
+```bash
+alias zh=`z -t -I .`
+```
+
+The new alias `zh` (jump to history) uses a parameter `-t` to sort the result by time and `-I` to use `fzf` for selection. the result is:
+
+![](images/mru.png)
+
+The first column indicates how many seconds ago you have visited, and the second column is the path name. With `zh`, you can type some character to use string matching in fzf, or use `<Up>`/`<Down>` (as well as `CTRL+j/k`) to move the selector (red `>`) up and down. 
+
+At last, press `<enter>` to accept or `<ESC>` to give up.
+
 
 ## Tips
 
@@ -362,6 +378,7 @@ alias zc='z -c'      # restrict matches to subdirs of $PWD
 alias zz='z -i'      # cd with interactive selection
 alias zf='z -I'      # use fzf to select in multiple matches
 alias zb='z -b'      # quickly cd to the parent directory
+alias zh='zf -t .'   # cd to MRU.
 ```
 
 Import data from z.sh：