Changed front matter "credit" to "caption" and "url" to "caption_url"

This makes more sense and standardize frontmatter.

pages/documentation.md

@@ -150,15 +150,15 @@ image:
 
 
 
-### Credits with URL
+### Captions with URL
 
 Sometimes you want to give credit to the creator of your images, maybe with a link. Especially when you use Creative Commons-images like I do for this website. Just add the following front matter and *Feeling Responsive* does the rest:
 
 ~~~
 image:
     title: header_image.jpg
-    credit: Image by Phlow
-    url: "http://phlow.de/"
+    caption: Image by Phlow
+    caption_url: "http://phlow.de/"
 ~~~
 
 ### Define all images for an article
@@ -168,8 +168,8 @@ image:
     title: title_image.jpg
     thumb: thumbnail_image.jpg
     homepage: header_homepage_13.jpg
-    credit: Image by Phlow
-    url: "http://phlow.de/"
+    caption: Image by Phlow
+    caption_url: "http://phlow.de/"
 ~~~
 
 

pages/roadmap.md

@@ -43,7 +43,7 @@ permalink: "/roadmap/"
 * [<s>Add draft-templates for new pages/posts</s>](https://github.com/Phlow/feeling-responsive/tree/gh-pages/_drafts)
 * [<s>Step-by-Step-Guide to customize *Feeling Responsive*</s>]({{ site.url }}/getting-started/)
 * [<s>Video-Post-Format to feature videos in a huge way</s>]({{ site.url }}/design/video/)
-* <s>Title and Credit for images</s>
+* <s>Title and captions for images</s>
 * <s>SEO › Add metadescription to header.html and front matter</s>
 * [<s>Adding Open Graph for Jekyll</s>](https://gist.github.com/pathawks/1406355)
 * [<s>Gallery Post Example</s>]({{ site.url }}/design/gallery/)