Basic local development instructions

README.md

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+# kdl.dev
+
+Built with:
+
+- [11ty](https://11ty.dev)
+- [Tailwind](https://tailwindcss.com/)
+
+## Development
+
+Tested on Node 14.15.0 with npm 6.14.8.
+
+After running `npm install`, you can run a development environment with:
+
+```
+npm run dev
+```
+
+**Note:** Changes to Tailwind configuration or bare CSS in `global.css` are not
+picked up and sync'd by 11ty's Browsersync server automatically.