Shortcut Variables for jishacum's Eval Command

Shortcut	Original
`author` / `au`	`event.author`
`bot`	`event.bot`
`channel` / `ch`	`event.channel`
`drb`	`Discordrb`
`me`	`event.server.bot`
`message` / `msg`	`event.message`
`prefix`	`event.bot.prefix`
`ref`	`event.message.referenced_message`
`server` / `srv`	`event.server`

There's also an Embed function to construct a new embed with.

The function takes title, description, color, url in order.