Better Performance Tests

[fresheneesz]

Your performance tests don't say much because they combine constructor creation with instance creation and method calls. I took the time to split those out (and included my library proto). Fiber still does very well:

• http://jsperf.com/js-inheritance-performance-method-calls

The other two tests are listed in the description in that test. I recommend switching your "performance test" link to this, because its much more telling.