Cannot install "lanyon" jekyll theme - ruby

Question

Before I begin this, some preface warning;
My knowledge of jekyll is 0.
My knowledge of ruby is 0.
Though I do think I've done pretty well for having no experience and just stepping into it today. That said, this is all completely new to me.
I wanted to give it a try for my github pages for a blog, just to see if I could make it work. I am running into a huge issue with what I suppose would be called the global variables.
I downloaded Lanyon here; Lanyon
I did the following steps, in order, from my Windows 8.1 x64 machine.
Installed python 3.4.1 (link)
Installed ruby using the RailsInstaller (link)
Installed rubygems using gem update --system from a PowerShell console
created a new github repository
created a gh-pages branch in that repository
created a Gemfile in that branch, with the following text
source 'https://rubygems.org'
gem 'github-pages'
Then came the work with Lanyon.
downloaded Lanyon and extracted it, I copied all of the files into a new directory
pushed the entire directory to my repository on branch gh-pages
tried to navigate to the gh-pages given url.
Now I did see the index page, it did have the content, but the theme wasn't working. The css files were missing. Per the instructions for theme structure found on jekyll's website, I made some changes; link
I moved the head.html and sidebar.html into a new subfolder under _includes called themes/lanyon, per the suggested layout on the api docs.
I loved the css folder into a new folder called assets/themes/lanyon, again following those docs
I moved the files apple-touch-icon-144-precomposed.png, apple-touch-icon-precomposed.png, and favicon.ico into a new folder called assets/themes/lanyon/img, following the example in the api docs.
Now comes the trickiest part ... trying to get the {{ ASSET_PATH }} to work.
I looked at the file _includes/themes/lanyon/head.html and saw the 3 css assets had no variables.
I changed them to look like the following
<link rel="stylesheet" href="{{ ASSET_PATH }}/css/poole.css">
<link rel="stylesheet" href="{{ ASSET_PATH }}/css/syntax.css">
<link rel="stylesheet" href="{{ ASSET_PATH }}/css/lanyon.css">
I updated _config.yml to look like this, obviously filling in the [] variables instead.
# For more see: http://jekyllrb.com/docs/permalinks/
permalink: /:categories/:year/:month/:day/:title
exclude: [".rvmrc", ".rbenv-version", "README.md", "Rakefile", "changelog.md"]
pygments: true
markdown: redcarpet
title: lanyon
tagline: 'lanyon theme'
author :
name : Ciel
email : stacey.cielia.lynn#gmail.com
github : ciel
paginate: 5
production_url : http://[username].github.io
Lanyon :
version: 2.0.0
BASE_PATH : "/[repositoryname]"
ASSET_PATH : "/assets/themes/lanyon"
But even with all of that, it still doesn't work. It does_ work if I type the absolute paths to the files, but that's not how jekyll is supposed to work, from my understanding.

Answer 1

To access ASSET_PATH, try :
{{ site.Lanyon.ASSET_PATH }}
Edit : You're using Jekyll Bootstrap (JB) variables, not Jekyll ones.
site.Lanyon.ASSET_PATH is specific to JB. Here it's '/assets/themes/lanyon'
site.Lanyon.BASE_PATH (site.baseurl in Jekyll) is the path from your site root to your Jekyll install.
eg : If you do http://ciel.com/my/jekyll/site/ to reach you site : site.Lanyon.BASE_PATH or site.baseurl = '/my/jekyll/site'
So if you want to reach your assets from any page, you need to do :
<link rel="stylesheet" href="{{ site.Lanyon.BASE_PATH }}{{ site.Lanyon.ASSET_PATH }}/css/poole.css">
or
<link rel="stylesheet" href="{{ site.baseurl }}{{ site.Lanyon.ASSET_PATH }}/css/poole.css">
Et voilà !