This post is older than a year. Consider some information might not be accurate anymore.
Emoji are the ideograms or smileys used in Japanese electronic messages and Web pages, the use of which is spreading outside Japan. Originally meaning pictograph, the word emoji literally means “picture” (e) + “character” (moji). Using github, dokuwiki, there are available for content editing. Some of the emoji codes are not super easy to remember, so here is a little cheat sheet.