challenge 18

Challenges/challenge_18.md

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+## Welcome to Challenge 18
+
+Welcome to the 18th Challenge 
+
+Today we will be learning to work with GitHub Gist and Markdown
+
+#### Brief Overview
+
+GitHub Gist is two fold and you can either use it for sharing ideas or sharing smaple code. It supports **Markdown**
+To learn more, vist:
+- [Learn more about GitHub gist](https://help.github.com/en/enterprise/2.13/user/articles/about-gists)
+
+## Task
+
+- Create a gist writing on any software development related topic that interests you
+- Create a gist sharing a small code snippet in your preferred programming language
+
+## How to Submit
+
+- Create your submission a markdown file named ``gist-solutions.md`` and add it inside the branch ``your-username-details`` used in previous challenges
+- In your submission file add the links to your **2 gist**
+- Ensure you push it so that it reflects inside your Pull request created in previous challenges