Feat/sub-route (#38)

* blog subroute support
* docs: update readme and blog

Co-authored-by: mrhut10 <ahut10@gmail.com>

data/blog/introducing-tailwind-nextjs-starter-blog.mdx

@@ -1,7 +1,7 @@
 ---
 title: 'Introducing Tailwind Nexjs Starter Blog'
 date: '2021-01-12'
-lastmod: '2021-01-18'
+lastmod: '2021-05-08'
 tags: ['next-js', 'tailwind', 'guide']
 draft: false
 summary: 'Looking for a performant, out of the box template, with all the best in web technology to support your blogging needs? Checkout the Tailwind Nextjs Starter Blog template.'
@@ -44,6 +44,7 @@ I wanted it to be nearly as feature-rich as popular blogging templates like [bea
 - Automatic image optimization via [next/image](https://nextjs.org/docs/basic-features/image-optimization)
 - Flexible data retrieval with [next-mdx-remote](https://github.com/hashicorp/next-mdx-remote)
 - Support for tags - each unique tag will be its own page
+- Support for nested routing of blog posts
 - SEO friendly with RSS feed, sitemaps and more!
 
 ## Sample posts
@@ -53,6 +54,7 @@ I wanted it to be nearly as feature-rich as popular blogging templates like [bea
 - [A tour of math typesetting](/blog/deriving-ols-estimator)
 - [Simple MDX image grid](/blog/pictures-of-canada)
 - [Example of long prose](/blog/the-time-machine)
+- [Example of Nested Route Post](/blog/nested-route/introducing-multi-part-posts-with-nested-routing)
 
 ## Quick Start Guide