chore: removed angular2.api.ts

BREACKING CHANGE:

We export InjectMetadata instead of InjectAnnotation

modules/angular2/forms.ts

@@ -16,6 +16,8 @@
 export {AbstractControl, Control, ControlGroup, ControlArray} from './src/forms/model';
 
 export {AbstractControlDirective} from './src/forms/directives/abstract_control_directive';
+export {Form} from './src/forms/directives/form_interface';
+export {ControlContainer} from './src/forms/directives/control_container';
 export {NgControlName} from './src/forms/directives/ng_control_name';
 export {NgFormControl} from './src/forms/directives/ng_form_control';
 export {NgModel} from './src/forms/directives/ng_model';