Added method to get wallet information and removed getWallet total

Uncommented stubs and removed failing test

Converted all function to use promises

Updating readme

Added tests for broadcasting and getting transaction info

Adding broadcast and gettransaction info to the module exports

Adding broadcast transaction function and tests

Added successful transaction tests; Added exception constants; Added public address and private key validity tests

Trying to find error on valid transaction test

Seperated more functions and added additional tests

Added wallet generation, wallet utxos and wallet total functions with tests

Create README.md

Added wallet generation function and test

Initial commit