Provided a more detailed exception message when .xaml files aren't set to Resource

This should close issue #8.  

In addition, I have also found that if some .xaml files are set to resource and some aren't--i.e. App.xaml is Resource and MainWindow.xaml is set to Content--PresentationFramework will throw the file name of the .xaml file causing issues and the code I added (handling for XamlParseException) will remind user to set all .xaml files to resource.  

I plan to write an utility function that will find the exact property and property value causing issues for when an exception message provides a line number and column position of where the stream was when the exception occurred.