cleanup(di): renamed viewInjector and hostInjector

BREAKING CHANGE
    Replace viewInjector with viewBindings
    Replace hostInjector with bindings

modules/examples/src/model_driven_forms/index.ts

@@ -69,7 +69,7 @@ class ShowError {
 }
 
 
-@Component({selector: 'model-driven-forms', viewInjector: [FormBuilder]})
+@Component({selector: 'model-driven-forms', viewBindings: [FormBuilder]})
 @View({
   template: `
     <h1>Checkout Form (Model Driven)</h1>