[examples/data-literate][m]: factor our a working markdown+CSV (data literate) example from site (where we already had a demo).

* removed a few extraneous things
* added the README.md with some instructions

examples/data-literate/tailwind.config.js

@@ -0,0 +1,33 @@
+const defaultTheme = require("tailwindcss/defaultTheme");
+
+module.exports = {
+  mode: 'jit',
+  // purge: ['./pages/**/*.{js,ts,jsx,tsx}', './components/**/*.{js,ts,jsx,tsx}'],
+  purge: [
+    "./pages/**/*.js",
+    "./pages/**/*.ts",
+    "./pages/**/*.jsx",
+    "./pages/**/*.tsx",
+    "./components/**/*.js",
+    "./components/**/*.ts",
+    "./components/**/*.jsx",
+    "./components/**/*.tsx"
+  ],
+  darkMode: false, // or 'media' or 'class'
+  theme: {
+    container: {
+      center: true,
+    },
+    extend: {
+      fontFamily: {
+        mono: ["Inconsolata", ...defaultTheme.fontFamily.mono]
+      }
+    },
+  },
+  variants: {
+    extend: {},
+  },
+  plugins: [
+    require('@tailwindcss/typography'),
+  ],
+}