ascii directory tree plugin for GitBook

convert indented lines to ascii directory tree for gitbook.

you can see asciitree in action. https://jianglibo.gitbooks.io

in:
``
{% asciitree %}
app
-main.js
-helper.js
-others
--Brocfile.js
package.json
{% endasciitree %}
`

out:
`
├── app
| ├── main.js
| ├── helper.js
| └── others
| └── Brocfile.js
└── package.json
`

Add it to your book.json with a basic configuration:
`json
{
"plugins": ["asciitree"],
"pluginsConfig": {
"asciitree": {
"leadingChar": "no need, because plugin will guess leadingChar.",
"trimRight": true
}
}
}
``