See #97

* Add custom_css parameter.

* Copy documentation from hugo-octopress.

Fixes #97

* Add assets-webpack-plugin

Signed-off-by: budparr <budparr@gmail.com>

* Add generated Webpack Assets file

This file is generated by Webpack and writes the names of our hashed assets

Signed-off-by: budparr <budparr@gmail.com>

* Update stylesheet

Note sure why this was updated

Signed-off-by: budparr <budparr@gmail.com>

* Add CSS file from generated file

Replaces hardcoded path

Signed-off-by: budparr <budparr@gmail.com>

2.0 Enhancements

- Improve template structure
- Fixed issue where flexbox was configured improperly and the side column expanded with longer content.
- No longer assume that posts are called "post"
- Simplify tag handling
- Improve related posts handling
- Support native Table of contents (if declared in params)
- Add DISQUS commenting (if disqusShortname added to config)
- Uses Hugo's Related content feature 
- Add asset hashing to Webpack for performance

Let's say your `.Site.Title` is "My Website". The code grabs `.Site.Title`, and then then checks to see if there's a `.Title`. When you're on the homepage, `.Title` is equivalent to `.Site.Title`, so that the browser bar will read:

> My Website | My Website

If we qualify `.Title` by confining to the `.Params` namespace, then the site title isn't duplicated:

```<title>{{ block "title" . }}{{ .Site.Title }} {{ with .Params.Title }} | {{ . }}{{ end }}{{ end }}</title>```

> My Website

But it still picks up `.Title` from posts and pages, where a content title exists in front matter:

> My Website | About Me

* Adding support for favicon

* Fixing html tag

Fixes #43