chore: Prepare package for publication

Construct a proper package.json in the dist file and copy
  the README there for a reasonably complete shipped package.

etc/testscript.html

@@ -6,7 +6,23 @@
     <script>
       (async () => {
         const vrml1to97 = await import('../dist/vrml1to97/index.js')
-        console.log(vrml1to97.convert('if (moo) cows // hurray'))
+        console.log(vrml1to97.convert( `
+#VRML V1.0 ascii
+
+# Example 2 - using the Separator and Material Nodes
+
+# Here comes the Sun
+# The Separator node groups everything within it together
+Separator {
+       # The material will affect all subsequent nodes
+       # The Sun becomes yellow
+       Material {
+              diffuseColor 1 1 0    # R G B
+       }
+       Sphere {
+               radius 10                   # the Sun is very big
+       }
+}`))
       })()
     </script>
   </head>