Add World Cup script

https://github.com/hubot-scripts/hubot-worldcup/blob/a224062d3769d0adb77af325bd896acd7dd5bf05/src/worldcup.coffee
Add Emoji script
Update Google Images script

https://github.com/github/hubot/commit/149980a29f7ac5e69e6ff18f56f7330dea6bb35a