decorator bug angular-simple-logger.min.js (min only)

Error when using decorator 

```
  }(), this.decorator = ["$log", function(e) {
                var o;
                return o = new n(e), o.currentLevel = r.debug, o
```

will only work when

```
  }(), this.decorator = ["$log", function($delegate) {
                var o;
                return o = new n($delegate), o.currentLevel = r.debug, o
```

Wonder if we can skip this section for minify.
