Define Module

[Pawda]

A proposition for #27

Restrictions:

• All users can use it.
• 15000 calls per hours.

Dependencies:

• Require an API key from http://developer.wordnik.com/ (free and instant delivery).

Usage:

• !define pie

Actions:

• Get a word definition from internet.

Intern Features:

• Recursive call to "!define {word}" will iterate all definitions then restart form the first one.
• Words are keep in cache for 2 minutes then deleted to to avoid unnecessary memory occupation.