Add MC Title 1.8 Interface - API

Update from #26.

MC Title 1.8 ingame example:

![MC Title 1.8 ingame example](http://cdn.idigitaltimes.com/sites/idigitaltimes.com/files/styles/large/public/2014/08/28/2014/05/15/18655.jpg?itok=vVwSA5Tl)
```java
Player player = ? //Get one player.
Player otherPlayer = ? //Get other Player from player.

Title title = new Title():
title.setTitle( "§cHello there." );
title.addSubTitle( "§aThis is a test" );
title.addSubTitle( player.getName() );
player.sendTitle( title );

List< String > subtitles = title.getSubTitles();
subtitles.add( 2, otherPlayer.getName() );
title.setSubTitles( subtitles );
otherPlayer.sendTitle( title );

for ( Player p : OnlinePlayers ){
  subtitles.add( 2, p.getName() );
  p.sendTitle( title );
}
```