fixed broken tests
Merge pull request #33 from cbyn/chris

fixed broken tests
Merge branch 'master' of https://github.com/cbyn/sales_engine into chase
merchant revenue test
Merge pull request #34 from cbyn/chris

merchant revenue test
merge
merchant revenue by date
Merge pull request #35 from cbyn/chris

merchant revenue by date
finished merchant methods
Merge pull request #36 from cbyn/chris

finished merchant methods
customer bi
merge
customer BI done