feat(core): renames Property into Input and Event into Output

BREACKING CHANGE:

Before: @Directive({properties: ['one'], events: ['two']})
After: @Directive({inputs: ['one'], outputs: ['two']})

Before: @Component({properties: ['one'], events: ['two']})
After: @Componet({inputs: ['one'], outputs: ['two']})

Before: class A {@Property() one; @Event() two;}
After: class A {@Input() one; @Output() two;}

modules/angular2_material/src/components/checkbox/checkbox.ts

@@ -6,7 +6,7 @@ import {NumberWrapper} from 'angular2/src/core/facade/lang';
 
 @Component({
   selector: 'md-checkbox',
-  properties: ['checked', 'disabled'],
+  inputs: ['checked', 'disabled'],
   host: {
     'role': 'checkbox',
     '[attr.aria-checked]': 'checked',