How to run

• start a iWF server following the instructions
• build and run this project make bins && ./iwf-samples start
• start a workflow: http://localhost:8803/moneytransfer/start?fromAccount=test1&toAccount=test2&amount=100&notes=hello
• watch in WebUI http://localhost:8233/namespaces/default/workflows
• modify the workflow code to try injecting some errors, and shorten the retry, to see what will happen