README: Images, makandra promo, repair screenshots

Author: triskweline

README.md

@@ -1,17 +1,33 @@
-Query Diet [![Tests](https://github.com/makandra/query_diet/workflows/Tests/badge.svg)](https://github.com/makandra/query_diet/actions)
-==========
+<p>
+  <a href="https://makandra.de/">
+    <picture>
+      <source media="(prefers-color-scheme: light)" srcset="media/makandra-with-bottom-margin.light.svg">
+      <source media="(prefers-color-scheme: dark)" srcset="media/makandra-with-bottom-margin.dark.svg">
+      <img align="right" width="25%" alt="makandra" src="media/makandra-with-bottom-margin.light.svg">
+    </picture>
+  </a>
+
+  <picture>
+    <source media="(prefers-color-scheme: light)" srcset="media/logo.light.shapes.svg">
+    <source media="(prefers-color-scheme: dark)" srcset="media/logo.dark.shapes.svg">
+    <img width="215" alt="Query Diet" role="heading" aria-level="1" src="media/logo.light.shapes.svg">
+  </picture>
+</p>
+
+[![Tests](https://github.com/makandra/query_diet/workflows/Tests/badge.svg)](https://github.com/makandra/query_diet/actions)
+
 
 Query Diet counts the number of database queries for the last request and *subtly* displays it in the upper right corner of your screen.
 The display turns red if too many queries are run, or if they take too long.
 This is useful to prevent [N + 1 queries](http://guides.rubyonrails.org/active_record_querying.html#eager-loading-associations) from creeping into your code.
 
 This is Query Diet being happy about 3 requests taking 66ms:
 
-![](http://blog.makandra.com/images/articles/2010-06-25-solving-the-n-1-query-problem-with-query-diet/query_diet_happy.png)
+![Query Diet is happy](media/query_diet_happy.png)
 
 This is Query Diet being angry about 103 requests taking 164ms:
 
-![](http://blog.makandra.com/images/articles/2010-06-25-solving-the-n-1-query-problem-with-query-diet/query_diet_angry.png)
+![Query Diet is angry](media/query_diet_angry.png)
 
 
 Installation