JayceTDE/is-validation — pull request #1 by komaval (2014-07-10 11:15:29+00:00)
Title: Export ValidationException

I've changed ValidatoinException [to "inherite" from Error](http://stackoverflow.com/questions/8802845/inheriting-from-the-error-object-where-is-the-message-property)
And exported it out

Now it can be possible to handle error like:
```javascript
try {
is(123).string().throwError()
} catch (err) {
if (err instanceof is.ValidationException) { ... }
else { ... }
}
```