mutationevent

var baseUrl = 'https://api.parse.com/1',
    appId = 'XXXXXXXXXXXXXXX',
    apiKey = 'XXXXXXXXXXXXXX'; // make sure to use the REST API Key

var _register = function(params, lambda, lambdaerror) {
    var method = 'POST',
        url = baseUrl + '/installations',
        payload = (params) ? JSON.stringify(params) : '';
            
    _helper(url, method, payload, function(data, status) {