Add a show_author variable in _config.yml (#40)

* Add show_author variable to _config.yml

* Include author.html unless show_author is false

'unless' is used instead of 'if' to keep including author.html
as the default option. 'unless' makes this change backward compatible
too as old _config.yml files don't need to explicitly have a
show_author variable.

Author: tildehacker

_config.yml

@@ -35,6 +35,8 @@ dash:
       icon: github-square
       color: purple
 
+  show_author: true
+
 # Build settings
 theme: jekyll-dash
 

_layouts/home.html

@@ -1,7 +1,9 @@
 ---
 layout: default
 ---
-{% include author.html %}
+{% unless site.dash.show_author == false %}
+  {% include author.html %}
+{% endunless %}
 {% assign posts_count = paginator.posts | size %}
 {% if posts_count > 0 %}
 <h1>recent articles</h1>

_layouts/post.html

@@ -1,7 +1,9 @@
 ---
 layout: default
 ---
-{% include author.html %}
+{% unless site.dash.show_author == false %}
+  {% include author.html %}
+{% endunless %}
 <div class="post">
   <h1 class="post-title">{{ page.title }}</h1>
   {% if site.plugins contains "jekyll/tagging" %}

_layouts/tag_page.html

@@ -1,7 +1,9 @@
 ---
 layout: default
 ---
-{% include author.html %}
+{% unless site.dash.show_author == false %}
+  {% include author.html %}
+{% endunless %}
 <h1 class="post-title">articles tagged with <a class="tag" href="/tag/{{ page.tag }}/">{{ page.tag }}</a></h1>
   <div class="post-links">
   {% for post in site.posts %}