removed unneded fixtures
added rounding method to config
added more test data
gitignore .project (GitEye visual git tool)
added days360 gem to calculate interest days
switching to .ruby-version instead of .rvmrc
removed .rvmrc
comments no longer needed as all calculation methods are in sync
more calculations in line with the excel sheets
enforcing correct rounding in each step of interest calculation
added more test-data - all good to go