Implemented a HashMap in the EmojiManager and Related Features

[mezcalhead]

Implemented a HashMap in the EmojiManager to allow access to the Emoji resource data quickly. Added a new function to return the Emojis found in a String populated with data from the Emoji resource data.

[coveralls]

Coverage decreased (-6.4%) to 91.371% when pulling fed0d7f on mezcalhead:feature/extras into 62ac1f9 on kcthota:master.

[mezcalhead]

The features I added allow for the following critical use case:

List<Emoji> emojis = EmojiUtils.parseEmojis(SOME_TEXT); for (Emoji e : emojis) { System.out.println(e.getEmoji() + ": " + e.getDescription()); if (e.getAliases() != null) { for (int j=0; j<e.getAliases().size(); j++) { System.out.println("Alias #" + (j+1) + ": " + e.getAliases().get(j)); } }

I am not sure why GitHub diff'ed the way it did. I didn't change many lines at all. New line issue?