Using https would result in:
(node) UnhandledPromiseRejectionWarning: ValidationError: server URI must start with `wss://`, `ws://`, `wss+unix://`, or `ws+unix://`.
at new Client (index.js:88:19)
The call to initiate a new wallet (through fundWallet) must not include parameters.
The previous version of the code gives error: ReferenceError: Cannot access 'test_wallet' before initialization
- Use reliable transaction submission methods where available
- Update text to describe the functions (esp. xrpl.js 2.0 stuff)
- Move Send XRP code samples to subfolders by language for consistency
with other tutorials
