Function getProp

getProp(object, prop?): any
Returns the property value if property name is present on the given object
Parameters
- object: any
  the object to inspect
- Optionalprop: null | string
  the property name to inspect, parent property and child property are concat with dot (.)
Returns any
the property value if property name is present on the given object
Example
```
getProp({foo: {bar: 'foobar'}}, 'foo.bar');    // foobar
```