implement php unit tests and fix/cleanup some other stuff along the way.  additionally, use ant build scripts for full static analysis and deployment packaging.
add an example config for unit tests
bump up versions to 0.4
minor changes for easier continuous integration
default to production gocoin hosts.  fix test case to ensure it points to the test system
Update GoCoin.php
Merge pull request #8 from GoCoin/develop

Unit testing & bug repair