# Gollum::DescendantTree

DescendantTree adds a helper function, similar to Gollum's Table of Contents (TOC), which adds an unordered list of links to all descendants of the current page.

## Installation

Add this line to your Gollum application's Gemfile:

    gem 'gollum-descendant_tree'

And then execute:

    $ bundle install

Or install it yourself as:

    $ gem install gollum-descendant_tree

## Setup

Then, add to your Gollum app's `config.ru`:

    require 'gollum/descendant_tree'

Create a custom markup class if you don't already have one, or just `include Gollum::DescendantTree` in your existing class.

    # lib/gollum/my_markup.rb
    class MyMarkup < Gollum::Markup
      include Gollum::DescendantTree
    end

Finally, in `config.ru`, tell Gollum to use your class instead of its default one.

    Precious::App.set(:wiki_options, {
      :markup_classes => { :markdown => MyMarkup }
    })

## Usage

Simply add `[[_TREE_]]` to any page of your wiki to add an unordered list of descendants to the page. If you're using custom css, you can target `ul.tree` for styling the list.

## Automated Tests

    $ bundle exec rspec spec

## Contributing

1. Fork it
2. Create your feature branch (`git checkout -b my-new-feature`)
3. Commit your changes (`git commit -am 'Add some feature'`)
4. Push to the branch (`git push origin my-new-feature`)
5. Create new Pull Request