Update README.md (#78)

- Break up a comma splice
- Add link to https://en.wikipedia.org/wiki/Literate_programming
- Move the VS Code screenshot to be under the corresponding list item
- Use [semantic line breaks](https://rhodesmill.org/brandon/2012/one-sentence-per-line/) to improve readability of diffs and the markdown source
- Remove two excess blank lines which make no difference in the rendered HTML output

README.md

@@ -12,31 +12,32 @@
 [![Go Report Card](https://goreportcard.com/badge/github.com/joerdav/xc)](https://goreportcard.com/report/github.com/joerdav/xc)
 [![Coverage Status](https://coveralls.io/repos/github/joerdav/xc/badge.svg?branch=main)](https://coveralls.io/github/joerdav/xc?branch=main)
 
-
 </div>
 
-
 `xc` is a task runner similar to `Make` or `npm run`, that aims to be more discoverable and approachable.
 
 The problem `xc` is intended to solve is scripts maintained separately from their documentation.
-Often a `Makefile` or a `package.json` will contain some useful scripts for developing on a project, then the `README.md` will surface and describe these scripts.
-Since the documentation is separate it may not be updated when scripts are changed or added, `xc` aims to solve this by defining the scripts inline with the documentation.
+Often a `Makefile` or a `package.json` will contain some useful scripts for developing on a project,
+then the `README.md` will surface and describe these scripts.
+In such a case, since the documentation is separate, it may not be updated when scripts are changed or added.
+`xc` aims to solve this by defining the scripts [inline with the documentation](https://en.wikipedia.org/wiki/Literate_programming).
 
 `xc` is designed to maximise convenience, and minimise complexity.
 Each `xc` task is defined in simple, human-readable Markdown.
-This means that even people without the `xc` tool installed can use the README.md (or whatever Markdown file contains the tasks) as a source of useful commands for the project.
+This means that even people without the `xc` tool installed can use the README.md
+(or whatever Markdown file contains the tasks)
+as a source of useful commands for the project.
 
 # Installation
 
 Installation instructions are described at <https://xcfile.dev/getting-started/#installation>.
 
 # Features
 
-![vscode demo](https://user-images.githubusercontent.com/19927761/214538057-963f9a47-ff95-486c-8856-b90bd358be3f.png)
-
 - Tasks defined in Markdown files as code blocks.
-- Editor tools:
+- Editor integration:
 	- VSCode (list and run `xc` tasks)
+	  ![vscode demo](https://user-images.githubusercontent.com/19927761/214538057-963f9a47-ff95-486c-8856-b90bd358be3f.png)
 	- Vim (recommended config for listing and running `xc` tasks)
 
 # Example