addContact: function() {

    var firstName = document.getElementById('fname').value;
    var lastName = document.getElementById('lname').value;
    var email = document.getElementById('email').value;
    var phone = document.getElementById('phone').value;

    firstName.charAt(0).toUpperCase();
    lastName.charAt(0).toUpperCase();

    dbContactsRef.push({firstName: firstName, lastName: lastName, email: email, phoneNumber: phone});
},