prototype(radio): Update mdc-radio to use names that match the existing radio names

Author: Nathan Tate

src/material-experimental/mdc-radio/module.ts

@@ -9,12 +9,12 @@
 import {CommonModule} from '@angular/common';
 import {NgModule} from '@angular/core';
 import {MatCommonModule} from '@angular/material/core';
-import {MatRadio} from './radio';
+import {MatRadioButton} from './radio';
 
 @NgModule({
   imports: [MatCommonModule, CommonModule],
-  exports: [MatRadio, MatCommonModule],
-  declarations: [MatRadio],
+  exports: [MatRadioButton, MatCommonModule],
+  declarations: [MatRadioButton],
 })
 export class MatRadioModule {
 }

src/material-experimental/mdc-radio/radio.ts

@@ -10,16 +10,16 @@ import {ChangeDetectionStrategy, Component, ViewEncapsulation} from '@angular/co
 
 @Component({
   moduleId: module.id,
-  selector: 'mat-radio',
+  selector: 'mat-radio-button',
   templateUrl: 'radio.html',
   styleUrls: ['radio.css'],
   host: {
     'class': 'mat-mdc-radio',
   },
-  exportAs: 'matRadio',
+  exportAs: 'matRadioButton',
   encapsulation: ViewEncapsulation.None,
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
-export class MatRadio {
+export class MatRadioButton {
   // TODO: set up MDC foundation class.
 }