Add Nextflow logo to the readme

README.md

@@ -1,10 +1,20 @@
+<picture>
+  <source media="(prefers-color-scheme: dark)" srcset="public/img/nextflow_darkbg.svg">
+  <source media="(prefers-color-scheme: light)" srcset="public/img/nextflow.svg">
+  <img alt="Nextflow Logo" src="public/img/nextflow.svg">
+</picture>
+
 # Nextflow web site
 
-[nextflow.io](https://nextflow.io) is a static web site. Pages are generated by using [Astro](https://astro.build).
+Source code for [https://nextflow.io](https://nextflow.io). Website is generated using [Astro](https://astro.build).
 
 ## Commands
 
-There is a `Makefile` with a few standard commands for working with the website:
+To build the website you need Node.js and `npm` installed. See the [npm docs](https://docs.npmjs.com/downloading-and-installing-node-js-and-npm) for instructions.
+
+<!-- TODO: We can replace the Makefile with `npm run` scripts in package.json -->
+
+There is a `Makefile` in the repo with a few standard commands for working with the website:
 
 | Command           | Action                               |
 | :---------------- | :----------------------------------- |
@@ -13,7 +23,7 @@ There is a `Makefile` with a few standard commands for working with the website:
 | `make publish`    | Publish the website to s3            |
 | `make invalidate` | Invalidate the Cloudfront cache      |
 
-The `dev` server builds pages on request and live-updates as you make changes. It includes additional debugging tools, but does not do all type-checking.
+The `dev` server builds pages on request and live-updates as you make changes. It includes additional debugging tools. Note that some type-checking on happens during `make build`.
 
 There are also a bunch of `npm` commands for more fine-grained control: