xrpl.js 2: update many mentions, more code

content/_code-samples/get-started/js/base.js

@@ -0,0 +1,14 @@
+// Wrap code in an async function so we can use await
+async function main() {
+
+  // Define the network client
+  const client = new xrpl.Client("https://s.altnet.rippletest.net:51234/")
+  await client.connect()
+
+  // ... custom code goes here
+
+  // Disconnect when done so Node.js can end the process
+  client.disconnect()
+}
+
+main()