NCH Ness Coin Hours

There will be TWO methods for each USER

1. getAddress (GET)
   returns JSON: {NCH-address: NCH-ammount}
   NCH-address: deposit NCH here
   The method automaticaly generates NCH USER address if it does not exist.
2. withdraw (POST)
   request:
   ammount: NCH-ammount

The USER — address pairs will be stored in JSON file ~/.ness/users_addr.json

There will be one Master-USER, the user which will recieve all nodes earned coin-hours.