Merge branch 'master' of https://github.com/dalexj/sales_engine into alex
implemented way to add invoices
ALL SPECS PASSING
Merge pull request #49 from dalexj/alex

Alex
fixed all BI tests
Merge pull request #50 from dalexj/alex

fixed all BI tests
some small refactors
Merge pull request #51 from dalexj/alex

some small refactors