Updated aviate tax document with Storylane demo

Author: reshmabidikar

userguide/aviate/aviate-tax.adoc

@@ -27,7 +27,9 @@ To use the tax feature provided by the Aviate plugin, ensure that KB is started
 com.killbill.billing.plugin.aviate.enableTax=true
 ----
 
-In addition, the Aviate Tax feature requires some tenant-level configuration.  This can be done by executing the https://killbill.github.io/slate/tenant.html#add-a-per-tenant-configuration-for-a-plugin[per-tenant configuration] endpoint as follows:
+In addition, the Aviate Tax feature requires some tenant-level configuration.  This can be done via the Aviate UI. See https://killbill.storylane.io/share/dmenqdn2zcoy[this demo].
+
+Alternatively, you can also execute the https://killbill.github.io/slate/tenant.html#add-a-per-tenant-configuration-for-a-plugin[per-tenant configuration] endpoint as follows:
 
 [source, bash]
 ----
@@ -125,6 +127,38 @@ Once the plugin is installed and tax support is enabled and configured, you can
 In brief, you would need to do the following:
 
 1. Ensure that the aviate plugin is installed and the tax feature is enabled and configured as explained above.
-2. Create an account.
-3. Create a billing account corresponding to the account. Ensure that the billing account includes tax registrations with the appropriate country code in the address.
-4. Create a subscription corresponding to a product configured in Step 1. The tax invoice item will automatically be generated. See https://docs.killbill.io/latest/aviate-tax-tutorial.html[Aviate Tax Tutorial] for further details.
++
+2. Create an account via https://apidocs.killbill.io/account#create-an-account[API] or https://docs.killbill.io/latest/userguide_kaui#create_an_account[kaui].
++
+3. Create a billing account corresponding to the account. You can use the following API call. Ensure that the billing account includes tax registrations with the appropriate country code in the address.
++
+```
+curl -X POST \
+  -H "Content-Type: application/json" \
+  -H "X-killbill-apiKey: aviate" \
+  -H "X-killbill-apisecret: aviate" \
+  -d '{
+    "kbAccountId": "a0df1865-9c75-45c5-876f-cf3147c50a41",
+    "taxRegistrations": [
+      {
+        "name": "John Doe",
+        "exempt": false,
+        "trn": "TRN-987654",
+        "address": {
+          "addressLine1": "123 Main Street",
+          "addressLine2": "Suite 4B",
+          "city": "Springfield",
+          "state": "Illinois",
+          "country": "US",
+          "postalCode": "62701"
+        }
+      }
+    ]
+  }' \
+  http://127.0.0.1:8080/plugins/aviate-plugin/v1/ba
+```
++
+4. Create a subscription corresponding to a product configured in Step 1. You can use https://apidocs.killbill.io/subscription#create-a-subscription[API] or https://docs.killbill.io/latest/userguide_kaui#_add_a_subscription[kaui]. The tax invoice item will automatically be generated.
+
+
+Also refer to the https://docs.killbill.io/latest/aviate-tax-tutorial.html[Aviate Tax Tutorial] for further details.