Text format of Cliq message emojis

Text format of Cliq message emojis

I'm looking to add emojis to my message text when posting a message from a custom function
Where can I find a list of the text format of the emojis I can use?

For example I want to do 
  1. zoho.cliq.postToUser("example@zoho.com", "Good Morning!!!  :)");

I need to know what other text I can use like :) for a smiley face.
Is there a special syntax I need to use in my function to add the emojis to my message text?