docs(toast): add interface to docs
docs(toast): add interface to docs

ramonornela/ionic-native,ramonornela/ionic-native,ramonornela/ionic-native,klirix/ionic-native,xueron/ionic-native,driftyco/ionic-native,driftyco/ionic-native,xueron/ionic-native,driftyco/ionic-native,klirix/ionic-native,klirix/ionic-native,xueron/ionic-native,ramonornela/ionic-native,xueron/ionic-native