Fixed capitalization and removed duplicate commands.
Merge branch 'master' of github.com:brotchie/node-dogecoin
Added dogecoind JSON-RPC error codes.

Added error codes as defined in
https://github.com/bitcoin/bitcoin/pull/1908.
Added passphrase callback to assist temporary wallet unlocks.

 - Added `passphrasecallback` option that's called if a RPC command
   fails because the wallet is locked.
 - There's no change to existing functionality if `passphrasecallback`
   is null.
 - Added explanations of the `passphrasecallback` option at the
   bottom of README.md.
Update README.md
Update README.md
Merge pull request #3 from brotchie/master

Added passphrase callback to assist temporary wallet unlocks.