Toast new 2.4 styling option attribute is not handled by the native wrapper

[phavre]

Hi, since v 2.4 the Toast Plugin support a styling attribute in the option object passed to the showWithOptions method. Please update the ionic wrapper with it (just an update to the ToasterOption class)

Styling

Since version 2.4.0 you can pass an optional styling object to the plugin. The defaults make sure the Toast looks the same as when you would not pass in the styling object at all.