Import issue

Adding module with:

```
import {InputEditorModule} from 'angular-inline-editor';

@NgModule({
  imports: [
    InputEditorModule.forRoot()
  ]
})
```

causes this error, because of 'forRoot'
```
ERROR in Error during template compile of 'AppModule'
Function calls are not supported in decorators but 'InputEditorModule' was called.
```