Cleaning up message.js
Merge pull request #98 from symaxian/master

Cleaning up message.js
Merge pull request #96 from ralphtheninja/master

cleaned up address.js and util.js
minor cleanup of wallet.sign
Adds failing test for Message.verifyMessage
Adds version support to Message.verifyMessage
Merge pull request #101 from dcousens/messagevers

Adds version support to Message.verifyMessage
isolate Message.verifyMessage tests from Message.signMessage