Add properties param to turf-circle

[DenisCarriere]

Add properties param to @turf/circle.

Example

var center = [-75.343, 39.984];
var radius = 5;
var steps = 10;
var units = 'miles';
var properties = {foo: 'bar'};

var circle = turf.circle(center, radius, steps, units, properties);

Reference: #659, #662