添加了新特性：支持设置各页面与每篇博文的封面

[BearD01001]

花了一两天时间改造了大大的Hexo主题，添加了页面封面与博文封面的设置，更大气一些哈
由于第一次使用Swig与Stylus，一边改造一边学习，可惜改动蛮多的，已与原版不兼容_(:зゝ∠)_
做了响应式处理，基本没什么大问题嘞~

页面封面设置：

# /themes/nextd/_config.yml
# Page covers for follow pages, whom height is greater than 400px.
# Home cover is required, which is default cover for other pages.
cover:
  home: /images/home_bg.jpg
  tag: /images/tag_bg.jpg
  archive: /images/archive_bg.jpg
  category: /images/category_bg.jpg
  # post: 
  # about: 
  # pages: 

效果：

博文封面设置（效果预览>从零开始：现在开始用ES6写代码 | 熊D博客）：

---
title: 从零开始：现在开始用ES6写代码
date: 2016-09-30 18:46:45
categories: JavaScript
tags: [JS,JavaScript,ES6,ECMAScript6,ES2015,Babel,Gulp,NodeJs]
cover: banner-write-in-es6.jpg
---

博文封面效果借鉴了 Hux 大大博客的效果，谢谢~

效果：

[houndci-bot]

'sidebarTop' is defined but never used.

[geekrainy]

这已经没 next 主题的样子了。

[monster-wang-aws]

和 @geekrainy 有同感
Hux 的 blog 确实很酷炫，之前看到也觉得很好
不过这个定位和风格多少和 next 本身有出入？
以及 @HiDino9 这个是三种主题都支持吗？

[BearD01001]

@geekrainy @monster-gump
确实改动蛮大的，不过感觉NexT整体960px的宽幅稍大一点的屏幕就会显得空白过多，所以才有了这个修改的初衷，算是融合了NexT与HuxBlog吧。
主题是基于NexT.Pisces修改的哈

[ivan-nginx]

Renamed lib on vendors? Again? Why?

And what with config file?

OMG, no.

[BearD01001]

@ivan-nginx
Opps! Sorry! Maybe I made NexTD from NexT that is the elderly version.
Perhaps this feature can be modified in _config.yml, resetting vendors._internal ?

[ivan-nginx]

@BearD01001 perhaps, before doing pull request need to merge latest master branch from original to your repo? And after that do all changes.

[BearD01001]

@ivan-nginx thank you for your advice. I'm so sorry for my fault and I will correct it as soon as possible. really sorry.

[BearD01001]

@ivan-nginx after checked my local repository I found that there are both vendors and lib directiry. Σ( ° △ °|||)︴
this change didn't casuse a conflict. it's so minor that not get my enough attention.
even so, thank you for your advice and I have improved it.

[iissnan]

Nice work. It seems there are tons of changes you have done for the new look. I would like to suggest you to implement them as a new scheme. 🍺

[ivan-nginx]

NextD: https://github.com/BearD01001/hexo-theme-nextd