added .zeus.sock to the gitignore because of a known bug with the zeus gem
added *.swp and *.swo files to gitignore because they need not be shared between developers and it may cause conflicts with vim
added some items to the todo list
added presence validations on fields which needed it
added postgres database to the test db for faster tests
ran migrations
added initial tests to the calculation model
enabled factory girl nicer syntax FactoryGirl.create(:something) vs create(:something)
added more realistic values