/**
* Convenience method for constructing a KeyMap
* @param {Number/Array/Object/String} key Either a string with the keys to listen for, the numeric key code, array of key codes or an object with the following options:
* <code>{key: (number or array), shift: (true/false), ctrl: (true/false), alt: (true/false)}</code>
* @param {Function} fn The function to call
* @param {Object} scope (optional) The scope (<code>this</code> reference) in which the specified function is executed. Defaults to this Element.
/**
* Convenience method for constructing a KeyMap
* @param {Number/Array/Object/String} key Either a string with the keys to listen for, the numeric key code, array of key codes or an object with the following options:
* <code>{key: (number or array), shift: (true/false), ctrl: (true/false), alt: (true/false)}</code>
* @param {Function} fn The function to call
* @param {Object} scope (optional) The scope (<code>this</code> reference) in which the specified function is executed. Defaults to this Element.