Add authors taxonomy for blog posts (#435)

earnest

16.32.2020 e26616e170cb5db79b24c6e27a1f873a064429b5

 exampleSite/content/posts/external-post.md

@@ -12,4 +12,5 @@
]
externalLink = "https://github.com/luizdepra/hugo-coder/wiki"
series = ["Hugo"]
authors = ["External link test"]
+++