Tests: Added bitcoind base58 key data and tests
Added inspect prototype G5
Merge pull request #743 from braydonf/feature/inspect-g5

Added inspect prototype G5
PrivateKey: Lodash to check if undefined, and made tests not random (T2)
Merge pull request #738 from braydonf/tests/base58-keys

Tests: Added bitcoind base58 key json data and tests
Transport: Added a peer pool to maintain a set of connected peers
Transport/Pool: Use sinon for tests.