add summary, link and image for README article

Author: remimarcelle

Wireframe/index.html

@@ -17,13 +17,16 @@ <h1>Planning Your Codebase</h1>
       <section>
         <article>
           <img 
-            src="https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSdd25hyNQOMs4Xx1Cv_A_oaT0zagfSWlXMBA&s" 
-            alt="Official Git logo"
+            src="https://docs.github.com/assets/cb-55933/mw-1440/images/help/repository/readme-links.webp" 
+            alt="Example of ReadMe file on GitHub"
           />
           <hr />
-          <h2>What is Git?</h2>
-          <p>[summary goes here]</p>
-          <a href="#">Read more</a>
+          <h2>What is the purpose of a README file?</h2>
+          <p>The purpose of a README file is to document a project on a repository, whether
+            it is a personal project or a collaborative effort. It can contain things like 
+            what task was completed, why the project itself is useful, accessibility 
+            information, how it was implemented, and how to run it.</p>
+          <a href="https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-readmes">Read more</a>
         </article>
 
         <article>