HackPack/HackUnit — pull request #9 by icambridge (2014-11-16 12:05:54+00:00)
Title: Add assertion for instanceOf

Added a method to do an assertion that an object is an instance of a class.

Example
```
public function testIsInstance(): void {
$instance = -new FancyClass();
$this->expect($instance)->toBeInstanceOf(FancyClass');
}
```