$scope.uiChatOptions = {
    //'left' or 'right'; defaults to right
    usersListSide: 'right',
    //if set to twa, the chat will filter for twemoji awesome
    emoji: 'twa',
    curseFilter: true,
    users: [arrayOfUsersInChat],
    user: {userObject}
    defaultUserImage: 'default for no user image'
    messages: [messagesFromUsersInChat]
  };

  $scope.messageCallbackFunction = function(message){
    //process message here whenever message received
  };

  $scope.isTypingCallbackFunction = function(lengthOfCharacters){
    //process is activity here for user is typing...
  };

  var arrayOfUsersInChat = [];
  arrayOfUsersInChat.push({
    username: 'what to display',
    id: 'unique id, maybe from mongodb? this is optional, if its not included the username must be unique'
    image: 'an image for the user'
    admin: false // or true if they are a chat admin
  });

  var messagesFromUsersInChat = [];
  messagesFromUsersInChat.push({
    //the same userobject as listed below.
    user: {userObject}
    //the message sent
    message: 'message sent by user'
  });

  var userObject = {};
  userObject = {
    username: 'what to display',
    id: 'unique id, maybe from mongodb? this is optional, if its not included the username must be unique'
    image: 'an image for the user'
    admin: false // or true if they are a chat admin
  };