Please see the XDA thread for details and instructions: http://forum.xda-developers.com/showthread.php?t=2138089
Especially, note that this is only the module to replace smileys. You can find some smiley packs in the thread above (second post).
This isn't compatible with most KitKat ROMs as smiley support was dropped completely in AOSP! It was re-introduced in CM11 though.