Added the assert statement to make sure that for the interested accrued, the month is greater than or equall to 1
Added the script file and loanUnitTestfiles. Note that unit test provides the interest rate as a percentage already
Merge remote-tracking branch 'origin/master'

Conflicts:
	Loan.py
Added the script file and loanUnitTestfiles. Note that unit test provides the interest rate as a percentage already