HD Wallet workbook

[juanfranblanco]

The old hd wallet workbook has been condensed into transferring Ether.

We need a workbook explaining:

• How to create an HdWallet.
• The references to NBitcoin
• Creation of word list
• Passwords (not are the same as Metamask passwords)
• etc.

[anegg0]

@juanfranblanco #73