Support multiple Post Authors (#1793)

Author: maennchen

_layouts/post.html

@@ -11,7 +11,7 @@ <h1>{{ page.title }}</h1>
         {% if page.subtitle %}
         <h2>{{ page.subtitle }}</h2>
         {% endif %}
-        <div class="byline">{{ page.date | date: "%B %d, %Y" }}{% if page.author %} &middot; by {{ page.author}}{% endif %} &middot; in {% for category in page.categories %}
+        <div class="byline">{{ page.date | date: "%B %d, %Y" }}{% if page.authors %} &middot; by {{ page.authors | join: ", " }}{% endif %} &middot; in {% for category in page.categories %}
           {% if category == "Elixir in Production" %}
             <a class="category" href="/cases.html">{{ category }}</a>
           {% else %}

_posts/2012-04-24-a-peek-inside-elixir-s-parallel-compiler.markdown

@@ -1,7 +1,8 @@
 ---
 layout: post
 title: A peek inside Elixir's Parallel Compiler
-author: José Valim
+authors:
+-  José Valim
 category: Internals
 excerpt: Today, a parallel compiler just landed in Elixir main. The goal of the parallel compiler is to compile files in parallel, automatically detecting dependencies between files. In this blog post, we are going to take a peek into the parallel compiler internals and learn more about Erlang and Elixir in the process.
 ---

_posts/2012-05-25-elixir-v0-5-0-released.markdown

@@ -1,7 +1,8 @@
 ---
 layout: post
 title: Elixir v0.5.0 released
-author: José Valim
+authors:
+-  José Valim
 category: Releases
 excerpt: We have finally released Elixir v0.5.0! This marks the first release since the language was rewritten. In this blog post, we will discuss what we achieved during this time and what are the next steps!
 

_posts/2012-08-01-elixir-v0-6-0-released.markdown

@@ -1,7 +1,8 @@
 ---
 layout: post
 title: Elixir v0.6.0 released
-author: José Valim
+authors:
+-  José Valim
 category: Releases
 excerpt: We have finally released Elixir v0.6.0! This release includes a build tool called Mix, support for Erlang typespecs, many improvements to IEx and improved IO, File and Macro support.
 

_posts/2012-10-20-elixir-v0-7-0-released.markdown

@@ -1,7 +1,8 @@
 ---
 layout: post
 title: Elixir v0.7.0 released
-author: José Valim
+authors:
+-  José Valim
 category: Releases
 excerpt: Elixir v0.7.0 is released with many improvements! Read on for more information.
 

_posts/2012-11-18-elixir-v0-7-1-released.markdown

@@ -1,7 +1,8 @@
 ---
 layout: post
 title: Elixir v0.7.1 released
-author: José Valim
+authors:
+-  José Valim
 category: Releases
 excerpt: Elixir v0.7.1 was released to celebrate the end of a two months journey traveling around Europe, United States and Brazil talking about Elixir.
 

_posts/2012-12-04-elixir-v0-7-2-released.markdown

@@ -1,7 +1,8 @@
 ---
 layout: post
 title: Elixir v0.7.2 released
-author: Yurii Rashkovskii
+authors:
+-  Yurii Rashkovskii
 category: Releases
 excerpt: Elixir v0.7.2 is released, new, improved type specifications syntax and many other improvements.
 

_posts/2013-01-27-elixir-v0-8-0-released.markdown

@@ -1,7 +1,8 @@
 ---
 layout: post
 title: Elixir v0.8.0 released
-author: José Valim
+authors:
+-  José Valim
 category: Releases
 excerpt: On the last 9th January, we celebrated two years since Elixir's first commit and to celebrate this occasion we have prepared a big release. Elixir v0.8 is out, with documentation, optimizations, bug fixes and shiny new features. Let's take a look at them!
 ---

_posts/2013-04-19-google-summer-of-code-2013.markdown

@@ -1,7 +1,8 @@
 ---
 layout: post
 title: Google Summer of Code 2013
-author: José Valim
+authors:
+-  José Valim
 category: Announcements
 excerpt: Elixir is taking part in Google Summer of Code 2013! Are you a student? Join us!
 ---

_posts/2013-04-29-elixir-v0-8-2-released.markdown

@@ -1,7 +1,8 @@
 ---
 layout: post
 title: Elixir v0.8.2 released
-author: José Valim
+authors:
+-  José Valim
 category: Releases
 excerpt: Elixir v0.8.2 is released with bug fixes, better Erlang R16 support and doctests.
 ---