New doc about how to add an image in GitLab Basics

doc/gitlab-basics/README.md

@@ -20,4 +20,6 @@ Step-by-step guides on the basics of working with Git and GitLab.
 
 * [Add a file](add-file.md)
 
+* [Add an image](add-image.md)
+
 * [Create a Merge Request](add-merge-request.md)

doc/gitlab-basics/add-image.md

+# How to add an image
+
+The following are the steps to add images to your repository in
+GitLab:
+
+Find the image that you’d like to add.
+
+In your computer files, find the GitLab project to which you'd like to add the image
+(you'll find it as a regular file). Click on every file until you find exactly where you'd
+like to add the image. There, paste the image.
+
+Go to your [shell](command-line-commands.md), and add the following commands:
+
+- To find the correct file, add this command for every file that you'd like to open until
+you reach the file where you added your image:
+```
+cd NAME-OF-FILE-YOU'D-LIKE-TO-OPEN
+```
+
+- Create a new branch:
+```
+git checkout -b NAME-OF-BRANCH
+```
+
+- Check if your image was correctly added to the file:
+```
+ls
+```
+
+You should see the name of the image in the list shown.
+
+- Go back one file:
+```
+cd ../
+```
+
+- Check the status and you should see your image’s name in red:
+```
+git status
+```
+
+- Add your changes:
+```
+git add NAME-OF-YOUR-IMAGE
+```
+
+- Check the status and you should see your image’s name in green:
+```
+git status
+```
+
+- Add the commit:
+```
+git commit -m “DESCRIBE COMMIT IN A FEW WORDS”
+```
+
+- Send your changes to GitLab.com:
+```
+git push origin NAME-OF-BRANCH
+```
+
+Your image should've been added to your repository in GitLab.