feat(Directive): convert properties to an array

fixes #2013

BREAKING CHANGE:

Before

    @Directive(properties: {
      'sameName': 'sameName',
      'directiveProp': 'elProp | pipe'
    })

After

    @Directive(properties: [
      'sameName',
      'directiveProp: elProp | pipe'
    ])

modules/benchmarks/src/largetable/largetable_benchmark.js

@@ -233,10 +233,10 @@ class AppComponent {
 
 @Component({
   selector: 'largetable',
-  properties: {
-      'data': 'data',
-      'benchmarkType': 'benchmarktype'
-  }
+  properties: [
+      'data',
+      'benchmarkType'
+  ]
 })
 @View({
   directives: [NgFor, NgSwitch, NgSwitchWhen, NgSwitchDefault],