Update README.md

README.md

@@ -64,20 +64,35 @@ Command mktree creates a file tree out of `tree` output read from standard input
 *Usage*
 
 ```bash
-~ $ tree
+~ $ gotree
 .
 ├── dir
 │   └── file.txt
 └── file.txt
 
 1 directory, 2 files
+
 ~ $ gotree | mktree -o /tmp/mktree
+
 ~ $ gotree /tmp/mktree
 /tmp/mktree
 ├── dir
 │   └── file.txt
 └── file.txt
 
+1 directory, 2 files
+```
+```bash
+~ $ gotree > tree.txt
+
+~ $ mktree -o /tmp/mktree2 tree.txt
+
+~ $ gotree /tmp/mktree2
+/tmp/mktree2
+├── dir
+│   └── file.txt
+└── file.txt
+
 1 directory, 2 files
 ```
 

cmd/gotree/main.go

@@ -6,16 +6,16 @@
 // Usage
 //
 //   NAME:
-//   	gotree - Go implementation of the Unix tree command
+//     gotree - Go implementation of the Unix tree command
 //
 //   USAGE:
-//   	gotree [OPTION]... [DIRECTORY]
+//     gotree [OPTION]... [DIRECTORY]
 //
 //   OPTIONS:
-//   	-a          All files are listed
-//   	-d          List directories only
-//   	-L  level   Descend only <level> directories deep
-//      -go width   Output as Go literal with specified maximum column width
+//     -a          All files are listed
+//     -d          List directories only
+//     -L  level   Descend only <level> directories deep
+//     -go width   Output as Go literal with specified maximum column width
 //
 // Example
 //