#14 Updated get_measurements to use ordereddict
#14 Updated get_measurements to use ordereddict

get_measurements now returns an ordereddict so that the returned
dictionary is sorted by date (descending). Removed an unnecessary call
to sorted, as the dictionary was already ordered.

coddingtonbear/python-myfitnesspal,tomn46037/python-myfitnesspal,tomn46037/python-myfitnesspal,rbelzile/python-myfitnesspal,rbelzile/python-myfitnesspal