Add goals to README
Merge pull request #17 from dalexj/alex

Add goals to README
add merchant repository and tests
move define loop to module
quick mechant repo test fix
another quick mechant repo test fix
add invoice item repo and test
Three of the basis classes and their tests
fixed define_method for repository module
add test helper
filled in rest of repositories
invoice item test fix
add transaction repo test
add item repo test, fixed style issues
add customer repo test
add invoice repo test
made many repo methods private
typo fix
test fixes
add rake default run