Replace sort property with polmyer compatible property#23

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AlexKeySmith wants to merge 2 commits intoSortableJS:masterfrom

AlexKeySmith:22-sort-property-not-working

Commits on Nov 6, 2016

deprecated sort property in favour of disableSort for polymer markup compatibility
AlexKeySmith
committed
syncronising sort and disabledSort properties
AlexKeySmith
committed