Add support to Disqus feature (yousinix#28)

fixes yousinix#24

_includes/blog/disqus.html

@@ -0,0 +1,14 @@
+{%- if site.disqus -%}
+  <div id="disqus_thread"></div>
+  <script type="text/javascript">
+    var disqus_shortname = '{{ site.disqus }}';
+    (function() {
+      var disqus = document.createElement('script');
+      disqus.type = 'text/javascript';
+      disqus.async = true;
+      disqus.src = '//' + disqus_shortname + '.disqus.com/embed.js';
+      (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(disqus);
+    })();
+  </script>
+  <noscript>Please enable JavaScript to view the <a href="http://disqus.com/?ref_noscript">comments powered by Disqus.</a></noscript>
+{%- endif -%}

_layouts/post.html

@@ -29,3 +29,9 @@ <h1><b>{{ page.title }}</b></h1>
 </p>
 
 {{ content }}
+
+{% if page.comments %}
+<div class="pt-5">
+  {% include blog/disqus.html %}
+</div>
+{% endif %}

docs/_config.yml

@@ -58,6 +58,10 @@ collections:
     output: true                                        # For Documentation Only
 
 
+### Disqus ###
+disqus: your-short-name-disqus                          # Your website Shortname on disqus
+
+
 ### Defaults for collections ###
 defaults:
   - scope:
@@ -70,7 +74,11 @@ defaults:
       type: "elements"                                  # For Documentation Only
     values:                                             # For Documentation Only
       layout: "element"                                 # For Documentation Only
-
+  - scope:
+      path: ""
+      type: "posts"
+    values:
+      comments: false                                   # Set to true to enable disqus comments
 
 ### Exclude from processing ###
 exclude:

test/_config.yml

@@ -23,6 +23,7 @@ author:
 
 ### Posts ###
 permalink: /blog/:title
+disqus: short-name-disqus
 
 
 ### Collections ###
@@ -46,7 +47,11 @@ defaults:
       type: "elements"
     values:
       layout: "element"
-
+  - scope:
+      path: ""
+      type: "posts"
+    values:
+      comments: false
 
 plugins:
   - jekyll-default-layout