It's very easy to apply.

Step1- include message.js or message-min.js script after your ending body tag like:
❮script src="/path/messageup.js"❯❮/script❯ or ❮script src="/path/messageup-min.js"❯❮/script❯

Step2- initialize your own script just above your message.up script tags as
❮script❯
     var msg=["Message 1", "Message 2", "Message 3", "Message 4", "Message 5" ];  //define messages here
     var color=["red", "green", "yellow", "green", "blue"];  // define color here (optional)
     var time=1500;  // define time here (optional)
     var speed="slow";  // define speed here as slow or fast (optional)
     var iteration="repeat";  // define iteration type here as repeat or no-repeat (optional)
❮/script❯

Step3- include an id to your div as message-box in HTML like:
❮div id="message-box"❯❮/div❯

Now you are ready to go :)