docs(readme): use forRoot() in example module imports. (#1271)

Author: JanStureNielsen

GETTING_STARTED.md

@@ -35,7 +35,7 @@ import { MdButtonModule } from '@angular2-material/button';
 import { MdCardModule } from '@angular2-material/card';
 // other imports 
 @NgModule({
-  imports: [MdButtonModule, MdCardModule],
+  imports: [MdButtonModule.forRoot(), MdCardModule.forRoot()],
   ...
 })
 ```

src/lib/button-toggle/README.md

@@ -14,7 +14,7 @@ You can read more about button toggles in the
 Importing the module:
 ```ts
  @NgModule({
-    imports: [MdButtonToggleModule],
+    imports: [MdButtonToggleModule.forRoot()],
     ...
  })
  export class MyAppModule { }

src/lib/grid-list/README.md

@@ -14,7 +14,7 @@ To use `md-grid-list`, import the MdGridList module into your application's NgMo
 import {MdGridListModule} from '@angular2-material/gridlist';
 
 @NgModule({
-  imports: [MdGridListModule],
+  imports: [MdGridListModule.forRoot()],
   ...
 })
 export class MyAppModule {}

src/lib/list/README.md

@@ -14,7 +14,7 @@ To use `md-list`, import the MdList module into your application's NgModule:
 import {MdListModule} from '@angular2-material/list';
 
 @NgModule({
-  imports: [MdListModule],
+  imports: [MdListModule.forRoot()],
   ...
 })
 export class MyAppModule {}

src/lib/menu/README.md

@@ -20,7 +20,7 @@ Import the MdMenu module.
 import {MdMenuModule} from '@angular2-material/menu';
 
 @NgModule({
-  imports: [MdMenuModule],
+  imports: [MdMenuModule.forRoot()],
   ...
 })
 export class MyAppModule {}

src/lib/radio/README.md

@@ -12,7 +12,7 @@ import { MdRadioModule } from '@angular2-material/radio';
 Adding providers and directives:
 ```ts
 @NgModule({
-  imports: [MdRadioModule],
+  imports: [MdRadioModule.forRoot()],
   ...
 })
 export class MyAppModule { }

src/lib/slider/README.md

@@ -22,7 +22,7 @@ You can read more about the slider in the
 Importing the module:
 ```ts
  @NgModule({
-    imports: [MdSliderModule],
+    imports: [MdSliderModule.forRoot()],
     ...
  })
  export class MyAppModule { }