Fail to include style

[moonmoondog]

Following the Readme file, I failed the first step to add < rangeSlider:RangeSliderStyle /> into the <Application.Styles> </Application.Styles> . That is not recognized as a valid style axaml style file. Tried to put < StyleInclude Source="rangeSlider:RangeSliderStyle" />, but that failed to complie as well. What is the work around?