Add Jira link to readme

Also adds new transactions endpoint example

Signed-off-by: James Taylor <jamest@uk.ibm.com>

README.md

@@ -1,6 +1,6 @@
 # Fabric REST sample
 
-Prototype sample REST server to demonstrate good Fabric Node SDK practices
+Prototype sample REST server to demonstrate good Fabric Node SDK practices for parts of [FAB-18511](https://jira.hyperledger.org/browse/FAB-18511)
 
 The primary aim of this sample is to show how to write a long running client application using the Fabric Node SDK
 
@@ -8,6 +8,8 @@ The REST API is intended to work with the [basic asset transfer example](https:/
 
 To install the basic asset transfer chaincode on a local Fabric network, follow the [Using the Fabric test network](https://hyperledger-fabric.readthedocs.io/en/release-2.2/test_network.html) tutorial
 
+## Usage
+
 **Note:** these instructions should work with the release-2.2 branch of `fabric-samples` but later versions require some changes
 
 To build and start the sample REST server, you'll need to [download and install an LTS version of node](https://nodejs.org/en/download/)
@@ -44,45 +46,53 @@ Start the sample REST server
 npm run start:dev
 ```
 
-If everything went well, you can now make REST calls!
+## REST API
 
-For example, get all assets...
+If everything went well, you can now make basic asset transfer REST calls! For example...
+
+### Get all assets...
 
 ```shell
 curl http://localhost:3000/api/assets
 ```
 
-Check whether an asset exists...
+### Check whether an asset exists...
 
 ```shell
 curl --include --request OPTIONS http://localhost:3000/api/assets/asset7
 ```
 
-Create an asset...
+### Create an asset...
 
 ```shell
 curl --include --header "Content-Type: application/json" --request POST --data '{"id":"asset7","color":"red","size":42,"owner":"Jean","appraisedValue":101}' http://localhost:3000/api/assets
 ```
 
-Read an asset...
+### Read transaction status...
+
+```shell
+curl http://localhost:3000/api/transactions/__transaction_id__
+```
+
+### Read an asset...
 
 ```shell
 curl http://localhost:3000/api/assets/asset7
 ```
 
-Update an asset...
+### Update an asset...
 
 ```shell
 curl --include --header "Content-Type: application/json" --request PUT --data '{"id":"asset7","color":"red","size":11,"owner":"Jean","appraisedValue":101}' http://localhost:3000/api/assets/asset7
 ```
 
-Transfer an asset...
+### Transfer an asset...
 
 ```shell
 curl --include --header "Content-Type: application/json" --request PATCH --data '[{"op":"replace","path":"/owner","value":"Ashleigh"}]' http://localhost:3000/api/assets/asset7
 ```
 
-Delete an asset...
+### Delete an asset...
 
 ```shell
 curl --include --request DELETE http://localhost:3000/api/assets/asset7

demo.http

@@ -25,6 +25,10 @@ content-type: application/json
     "appraisedValue": 101
 }
 
+### Read transaction status
+
+GET {{baseUrl}}/transactions/__transaction_id__ HTTP/1.1
+
 ### Read asset
 
 GET {{baseUrl}}/assets/asset7 HTTP/1.1