function isNegativeInteger( value ) {
	return ( isPrimitive( value ) || isObject( value ) );
}
Tests if a value is a negative integer.

@param {*} value - value to test
@returns {boolean} boolean indicating whether value is a negative integer

@example
var bool = isNegativeInteger( -5.0 );
// returns true

@example
var bool = isNegativeInteger( new Number( -5.0 ) );
// returns true

@example
var bool = isNegativeInteger( 5.0 );
// returns false

@example
var bool = isNegativeInteger( -3.14 );
// returns false

@example
var bool = isNegativeInteger( null );
// returns false