Updated readme, organized presentation files

README.md

@@ -5,6 +5,6 @@ A repository where I backup impress.js presentations.
 ## Rules of thumb
 
 - Each presentation should be in a folder with the name of the presentation.
-- The folder should contain the `index.html` file
-- The folder can have a `style.css` file and other static files like `js` folders.
-- Images should be wither referenced via public url, or placed in a folder called `img` inside the presentation folder.
+- The folder should contain the `index.html` file (the generated impress.js presentation file)
+- Static referenced assets should be put inside folders like, for example `css/style.css`.
+- Images should be either referenced via public url, or placed in a folder called `img` inside the presentation folder (example: `img/example.jpg`).