Update README.md

Author: githubteacher

README.md

@@ -1,5 +1,5 @@
-# Caption this
+# GitHub slideshow
 
 This repository hosts a Markdown-driven slideshow. Let the bot show you around. But if you want to know more, keep reading!
 
-If you're using [GitHub Pages](https://help.github.com/articles/what-is-github-pages/), files inside the `_posts` folder will be rendered on the web page. They must be named with the pattern `####-##-##-description.md`. The contents of the file must contain [YAML front-matter](https://jekyllrb.com/docs/frontmatter/).
+If you're using [GitHub Pages](https://help.github.com/articles/what-is-github-pages/), files inside the `_posts` folder will be rendered on the web page. They must be named with the pattern `####-##-##-description.md`. The contents of the file must contain [YAML front-matter](https://jekyllrb.com/docs/frontmatter/).