Set up the RSS feed and the authors of the posts

_includes/author.html

@@ -0,0 +1,17 @@
+{%- assign author = site.data.authors[page.author] -%}
+
+{%- if author -%}
+
+ by 
+
+{%- unless author.email == empty -%}
+<a href="mailto:{{- author.email | strip | url_encode -}}?subject={{- page.title | default: site.title | strip | normalize_whitespace | uri_escape -}}">{{- author.name | strip | normalize_whitespace | xml_escape -}}</a>
+{%- endunless -%}
+
+{%- if author.email == empty -%}
+{{- author.name | strip | normalize_whitespace | xml_escape -}}
+{%- endif -%}
+
+&nbsp;
+
+{%- endif -%}