Sales Breakdowns

The function with 2 returns (breakdown of percentage of city sales in
comparison to region, by month and by year) and 2 input arguments --
the year and product abbreviation, both as strings (e.g. [months,years]
= salesfunc('2014a','FCOJ')).
Merge branch 'master' of https://github.com/kdhore/orianga-grande

Conflicts:
	getDemand.m