Update gayle.md

github-clinic/gayle.md

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+# Adding a preamble
+
+Trying out adding some text up front for a very interesting introduction. 
+
 # GitHub practice from the browser
 
 Working on GitHub.com, we contribute changes through **commits**. You'll practice creating several commits by making small edits to a file, writing commit messages, and committing changes to see them posted nicely online to communicate our work. You'll practice with the file with your name on it; everyone has their own file to practice with.