Updated command for resetting database in README.
Updated command for resetting database in README.

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