Feature request: Angular2 like class and style property binding [class.property]="expresion"

Example
```
v-bind:class.class-name="expression"
//is equivalent to
v-bind:class="{'class-name': expression}"
```
More about:
https://scotch.io/tutorials/angular-2-classes-with-ngclass-and-ngstyle#using-the-styleproperty-binding