Binding errors in 3.0 are less informative

2.3.0:
```
Uncaught ReferenceError: Unable to parse bindings.
Bindings value: text: dummy
Message: dummy is not defined 
```

3.0.0:
```
Uncaught ReferenceError: dummy is not defined 
```

http://jsfiddle.net/mbest/QFQkb/