fix(input): parent Item is optional

Author: adamdbradley

ionic/components/input/input.ts

@@ -79,7 +79,7 @@ export class TextInput extends InputBase {
   constructor(
     config: Config,
     form: Form,
-    item: Item,
+    @Optional() item: Item,
     app: IonicApp,
     platform: Platform,
     elementRef: ElementRef,
@@ -147,7 +147,7 @@ export class TextArea extends InputBase {
   constructor(
     config: Config,
     form: Form,
-    item: Item,
+    @Optional() item: Item,
     app: IonicApp,
     platform: Platform,
     elementRef: ElementRef,

ionic/components/input/test/form-inputs/main.html

@@ -85,4 +85,8 @@
     </ion-item>
   </ion-list>
 
+  <ion-input placeholder="Stand-alone ion-input"></ion-input>
+
+  <ion-input placeholder="Stand-alone textarea"></ion-input>
+
 </ion-content>