add DefaultText Property
use the default text in the input dialog
MetroDialogSettings.DefaultText = ""
ensure find the resources

when it do not have the app.xaml...
Merge pull request #1160 from ye4241/master

make the input dialog support for default text
Introduce SplitButton
Fix binding issues and Set ItemsSource as default content property
Added Commands dependency properties for better ViewModel compatibility
Introduce new style and fix some more bugs
Small fix to icons
oops... miss something
Update style (not finished yet)
update style
Merge pull request #1161 from Amrykid/SplitButton

Rebased #1138