Possibility to override Permalink

[kvaps]

Hi, original theme from hexo was support to override Continue reading with external link, eg:

---
title: Hexo website
date: 2012-04-12 23:33:26
link: http://www.hexo.io/
categories:
- tranquilpeak
- features
thumbnailImagePosition: left
thumbnailImage: http://d1u9biwaxjngwg.cloudfront.net/hexo-website/peak-140.jpg
---
This is a link post. Clicking on the link should open [Hexo](http://www.hexo.io/) in a new tab or window.
<!-- more -->

Will be translated to:

Where title, and Go to website link refers to http://www.hexo.io/

Is there any option to achieve the same behavior in hugo and hugo-tranquilpeak-theme?

[kakawait]

@kvaps Thank you for suggestion and PR. I'm currently switching my main laptop (and moving from macos to linux) so need to configure it and I'll treat your PR.

Will be part of next release