cleanup(di): renamed viewInjector and hostInjector

BREAKING CHANGE
    Replace viewInjector with viewBindings
    Replace hostInjector with bindings

modules/examples/src/material/dialog/index.ts

@@ -12,7 +12,7 @@ import {isPresent} from 'angular2/src/facade/lang';
 
 @Component({
   selector: 'demo-app',
-  viewInjector: [MdDialog],
+  viewBindings: [MdDialog],
 })
 @View({
   templateUrl: './demo_app.html',

modules/examples/src/material/radio/index.ts

@@ -5,7 +5,7 @@ import {UrlResolver} from 'angular2/src/services/url_resolver';
 import {commonDemoSetup, DemoUrlResolver} from '../demo_common';
 import {bind} from 'angular2/di';
 
-@Component({selector: 'demo-app', viewInjector: [MdRadioDispatcher]})
+@Component({selector: 'demo-app', viewBindings: [MdRadioDispatcher]})
 @View({templateUrl: './demo_app.html', directives: [MdRadioGroup, MdRadioButton]})
 class DemoApp {
   thirdValue;