Make site header text clickable (to home)

This is a pretty standard convention in blogs.

README.md

@@ -24,7 +24,6 @@ $ npm run build
 - add configurable license notice for footer
 - add favicon
 - add meta description / summary from front matter
-- make site header clickable (to home)
 
 ## License
 This repository contains the code of [Bootstrap](http://getbootstrap.com), which is licensed under the [MIT license](https://tldrlegal.com/license/mit-license).

layouts/_default/baseof.html

@@ -35,7 +35,7 @@
 
   <header class="blog-header">
     <div class="container">
-      <h1 class="blog-title">{{ .Site.Title | safeHTML }}</h1>
+      <h1 class="blog-title"><a href="{{ .Site.BaseURL }}" rel="home">{{ .Site.Title | safeHTML }}</a></h1>
       {{ if .Site.Params.description }}<p class="lead blog-description">{{ .Site.Params.description | markdownify }}</p>{{ end }}
     </div>
   </header>