Move purpose section towards bottom, keep top around usage

Author: MeanderingProgrammer

README.md

@@ -4,18 +4,6 @@ Plugin to improve viewing Markdown files in Neovim
 
 ![Demo](demo/demo.gif)
 
-# Purpose
-
-There are many existing markdown rendering plugins in the Neovim ecosystem. However,
-most of these rely on syncing a separate browser window with the buffer. This is the
-correct way to do things to get full feature support, however I wanted something that
-worked completely inside of Neovim and made things look slightly "nicer".
-
-The closest one I found to this was [headlines.nvim](https://github.com/lukas-reineke/headlines.nvim),
-which is an awesome plugin that I took several ideas from. However it just didn't have
-quite what I was looking for. In particular I wanted something that would disappear completely
-when editing a file and quickly render some style when viewing the file. Hence this plugin.
-
 # Features
 
 - Functions entirely inside of Neovim with no external windows
@@ -110,6 +98,18 @@ require('markdown').setup({
 })
 ```
 
+# Purpose
+
+There are many existing markdown rendering plugins in the Neovim ecosystem. However,
+most of these rely on syncing a separate browser window with the buffer. This is the
+correct way to do things to get full feature support, however I wanted something that
+worked completely inside of Neovim and made things look slightly "nicer".
+
+The closest one I found to this was [headlines.nvim](https://github.com/lukas-reineke/headlines.nvim),
+which is an awesome plugin that I took several ideas from. However it just didn't have
+quite what I was looking for. In particular I wanted something that would disappear completely
+when editing a file and quickly render some style when viewing the file. Hence this plugin.
+
 # Related Projects
 
 - [headlines.nvim](https://github.com/lukas-reineke/headlines.nvim) - Same high level