protocol agnostic url

_config.yml

@@ -1,9 +1,10 @@
 title:            Site Title
 description:      Describe your website here.
 logo:             site-logo.png
-disqus_shortname: 
+disqus_shortname:
 search:           true
 # Change url to your domain. Leave localhost server or blank when working locally.
+# You don't need to specify the protocol if you want it available on http and https. Example: //localhost:4000
 url:              http://localhost:4000
 
 # Owner/author information
@@ -12,22 +13,22 @@ owner:
   avatar:         bio-photo.jpg
   email:          you@email.com
   # Social networking links used in footer. Update and remove as you like.
-  twitter:        
-  facebook:       
-  github:         
-  stackexchange:  
-  linkedin:       
-  instagram:      
-  flickr:         
-  tumblr:         
+  twitter:
+  facebook:
+  github:
+  stackexchange:
+  linkedin:
+  instagram:
+  flickr:
+  tumblr:
   # For Google Authorship https://plus.google.com/authorship
-  google_plus:    
+  google_plus:
 
 # Analytics and webmaster tools stuff goes here
-google_analytics:   
-google_verify:      
+google_analytics:
+google_verify:
 # https://ssl.bing.com/webmaster/configure/verify/ownership Option 2 content= goes here
-bing_verify:         
+bing_verify:
 
 # Links to include in top navigation
 # For external links add external: true
@@ -59,7 +60,7 @@ kramdown:
   use_coderay: false
 
   coderay:
-    coderay_line_numbers: 
+    coderay_line_numbers:
     coderay_line_numbers_start: 1
     coderay_tab_width: 4
     coderay_bold_every: 10

feed.xml

@@ -3,15 +3,12 @@ layout: none
 ---
 <?xml version="1.0" encoding="utf-8"?>
 <feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en">
-{% if site.url != '' and
-   site.url | split: '/' | first != 'http:' and
-   site.url | split: '/' | first != 'https:'
-%}
+{% if site.url != '' and site.url | split: '/' | first != 'http:' and site.url | split: '/' | first != 'https:' %}
   {% assign site_url = site.url | prepend: 'http:' %}
-  {% post_content = post.content | xml_escape | replace:  site.url, url %}
+  {% assign post_content = post.content | xml_escape | replace:  site.url, url %}
 {% else %}
   {% assign site_url = site.url %}
-  {% post_content = post.content | xml_escape %}
+  {% assign post_content = post.content | xml_escape %}
 {% endif %}
 <title type="text">{{ site.title }}</title>
 <generator uri="https://github.com/mojombo/jekyll">Jekyll</generator>