Highlight that the base branch is v3 (#719)

Merge pull request 719

Author: ashmaroli

README.md

@@ -1,16 +1,13 @@
-# minima
-
-*Minima is a one-size-fits-all Jekyll theme for writers*. It's Jekyll's default (and first) theme. It's what you get when you run `jekyll new`.
-
-***Disclaimer:** The information here may vary depending on the version you're using. Please refer to the `README.md` bundled
-within the theme-gem for information specific to your version or by pointing your browser to the Git tag corresponding to your
-version. e.g. https://github.com/jekyll/minima/blob/v2.5.0/README.md*
-*Running `bundle show minima` will provide you with the local path to your current theme version.*
-
-
-[Theme preview](https://jekyll.github.io/minima/)
-
-![minima theme preview](/screenshot.png)
+<div align="center">
+  <p><em><strong>Disclaimer:</strong> The information here may vary depending on the version you're using.<br/>
+  Please refer to the <code>README.md</code> bundled within the theme-gem for information specific to your version or by pointing
+  your browser to the Git tag corresponding to your version. e.g. https://github.com/jekyll/minima/blob/v2.5.0/README.md.<br/>
+  Running <code>bundle show minima</code> will provide you with the local path to your current theme version.</em></p>
+  <img src="/readme_banner.svg"/>
+  <p>It's Jekyll's default (and first) theme. It's what you get when you run <code>jekyll new</code>.</p>
+  <p><a href="https://jekyll.github.io/minima/">Theme preview</a></p>
+  <p><img src="/screenshot.png"/></p>
+</div>
 
 ## Installation
 

minima.gemspec

@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |spec|
   spec.name     = "minima"
-  spec.version  = "2.5.1"
+  spec.version  = "3.0.0.dev"
   spec.authors  = ["Joel Glovier"]
   spec.email    = ["[email protected]"]