Change Subscriber from One Segment to Another

This API will add current subscriber to new segment and if option provided yes/no to delete from previous existing segment. it will return true or false

Example
var current_segment = 'CurrentSegmentName';
var change_segment = 'NewSegmentName';
var yes_no = 'yes/no';
var toBeReturn = _pa_changeSegment(current_segment, change_segment, yes_no);
console.log(toBeReturn); 

//return
true/false

var thenProm = toBeReturn.then(function(value){
	console.log(value);
});