New default height needs to be -1 to distinguish from genesis.
New default height needs to be -1 to distinguish from genesis.

dazoe/bitcoinjs-server,javascriptit/bitcoinjs-server,zhangweis/node-jds,bitfloor/bitcoinjs-server,bitfloor/bitcoinjs-server,dazoe/bitcoinjs-server,zhangweis/node-jds,javascriptit/bitcoinjs-server,zhangweis/node-jds,javascriptit/bitcoinjs-server,dazoe/bitcoinjs-server,bankonme/bitcoinjs-server,bankonme/bitcoinjs-server,bankonme/bitcoinjs-server