AngularPOC Apex class Web Service

AngularPOC.cls

global class AngularPOC {
  @RemoteAction
  webservice static String getContacts() {
    return JSON.serialize([SELECT Id, Name FROM Contact]);
  }

  @RemoteAction
  webservice static String getContact(String contactId) {
    return JSON.serialize([SELECT Id, Name, Title, Phone, Email FROM Contact WHERE Id =: contactId][0]);
  }
}