Slight fixes to the README
Add some basic PHPUnit tests

Required slight tweaks to code, to allow it to be called repeatedly
Added travis config file
Fix current tests
Add version specific tests
Don't rely on $current_version being up to date
Add version 1.03 of the schema
Update Tests section in README
Merge pull request #16 from Bjwebb/master

Add tests and update to allow checking of schema verison 1.03