updated styles for bootstrap-4

Author: gitbrent

README.md

@@ -98,8 +98,8 @@ Name|Type|Default|Description|
 `on`|string/html|"On"|Text of the on toggle
 `off`|string/html|"Off"|Text of the off toggle
 `size`|string|"normal"|Size of the toggle. Possible values are `large`, `normal`, `small`, `mini`.
-`onstyle`|string|"primary"|Style of the on toggle. Possible values are `default`, `primary`, `success`, `info`, `warning`, `danger`
-`offstyle`|string|"default"|Style of the off toggle. Possible values are `default`, `primary`, `success`, `info`, `warning`, `danger`
+`onstyle`|string|"primary"|Style of the on toggle. Possible values are: `primary`,`secondary`,`success`,`danger`,`warning`,`info`,`light`,`dark`
+`offstyle`|string|"secondary"|Style of the off toggle. Possible values are: `primary`,`secondary`,`success`,`danger`,`warning`,`info`,`light`,`dark`
 `style`|string| |Appends the value to the class attribute of the toggle. This can be used to apply custom styles. Refer to Custom Styles for reference.
 `width`|integer|*null*|Sets the width of the toggle. if set to *null*, width will be calculated.
 `height`|integer|*null*|Sets the height of the toggle. if set to *null*, height will be calculated.