add short descriptions of the three concepts

Author: edinakurdi

Wireframe/index.html

@@ -20,7 +20,7 @@ <h1>Developer essentials</h1>
       <img src="https://media2.dev.to/dynamic/image/width=1000,height=420,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Frb46gni0wl2759llb6xs.png" alt="readme file" />
       <h2>What is a README file?</h2>
       <p>
-        A README is ...
+        A README is often what people look at in a project to understand what it is about. It should include a description of the project, instructions on how to use it, and any additional information that may be useful. 
       </p>
       <a href="https://www.makeareadme.com/" target="_blank">Read more</a>
     </article>
@@ -29,7 +29,7 @@ <h2>What is a README file?</h2>
       <img src="https://live.staticflickr.com/2154/5734993652_d4a2ee8778_b.jpg" alt="" />
       <h2>What is the purpose of a wireframe?</h2>
       <p>
-        A wireframe is ...
+        A wireframe for a website is like a blueprint for a house. It is a visual representation of the layout of the website. It is useful for planning purposes and can save time before building, by helping us spot potential issues early.
       </p>
       <a href="https://balsamiq.com/blog/what-are-wireframes/" target="_blank">Read more</a>
     </article>
@@ -38,7 +38,7 @@ <h2>What is the purpose of a wireframe?</h2>
       <img src="https://blog.nobledesktop.com/_next/image?url=%2Fimages%2Fblog%2Fgit-branches%2Fgit-branches-merge.png&w=750&q=75" alt="git branching diagram" />
       <h2>What is a branch in Git?</h2>
       <p>
-        A branch in Git is ...
+        A branch in Git is like an alternative version of a project. When several developers work on the same project, separate branches help them avoid overriding each other's work. These branches then can be merged into the main branch through a pull request.
       </p>
       <a href="https://www.geeksforgeeks.org/git/introduction-to-git-branch/" target="_blank">Read more</a>
     </article>