Added config example for basic tests; Invoices; Creditnotes (untested)
PHPUnit tests
Cleanup, get functions (todo: initializeWithRawData), unit tests
Initialize invoices with raw data (except contact/company)
Get creditnote
Invoices and Creditnotes ::initializeWithRawData, minor fixes and refactors
Unit tests
Unit tests
Unit tests & bugfixes
Minor bugfix
Merge pull request #2 from sebdd/master

Invoices & creditnotes