function nativeClass( v ) {
	return toStr.call( v );
}
Returns a string value indicating a specification defined classification (via the internal property `[[Class]]`) of an object.

@param {*} v - input value
@returns {string} string value indicating a specification defined classification of the input value

@example
var str = nativeClass( 'a' );
// returns '[object String]'

@example
var str = nativeClass( 5 );
// returns '[object Number]'

@example
function Beep() {
    return this;
}
var str = nativeClass( new Beep() );
// returns '[object Object]'