Show beautiful Snack bar and display messages for:

1. Success
2. Error
3. Warning
4. Info

##DEMO

##USAGE

//define
final snackBar = simpleSnackBar(
                      //required
                      buildContext: context,
                      //required
                      messageText: "This is an info",
                      backgroundColor: Colors.white,
                      displayDismiss: false,
                      textColor: Colors.black,
                      snackBarType: SnackBarType.info);
//display
ScaffoldMessenger.of(context).showSnackBar(snackBar);