function registerUser(e) {
e.preventDefault();

let userData = {
    username: $("#registerUsername").val(),
    password: $("#registerPassword").val()
};
$.ajax({
    method: "POST",
    url: kinveyBaseUrl + '/user/' + kinveyAppKey,
    headers: kinveyAppAuthHeaders,
    data: userData,
    success: registerSuccess,
    error: handleAjaxError
});
function registerSuccess(userInfo) {
    saveAuthInSession(userInfo);
    showInfo("User Successfully Registered");
}