Fix site title and description for page's with a hero image assigned …

…with `page.image`

Close #322

CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Add Spanish translations to `text.yml`. [#300](https://github.com/mmistakes/so-simple-theme/pull/300)
 
 ### Fixed
+- Fix site title and description for page's with a hero image assigned with `page.image`. [#322](https://github.com/mmistakes/so-simple-theme/issues/322)
 - Correct stylesheet path in documentation. [#309](https://github.com/mmistakes/so-simple-theme/pull/309)
 - Clarify where to customize SCSS variables in `/assets/css/main.scss`. [#293](https://github.com/mmistakes/so-simple-theme/pull/293)
 

_includes/masthead.html

@@ -5,7 +5,8 @@
         <img src="{{ site.logo | relative_url }}" class="site-logo-img animated fadeInDown" alt="{{ site.title }}">
       </a>
     {% endif %}
-    {% unless page.image.path %}
+    {% assign page_image = page.image.path | default: page.image %}
+    {% unless page_image %}
       <h1 class="site-title animated fadeIn"><a href="{{ '/' | relative_url }}">{{ site.title }}</a></h1>
       <p class="site-description animated fadeIn" itemprop="description">{{ site.description }}</p>
     {% endunless %}