StoryFinder should be a facade for finding in different guises.
It should allow the finding of textual story paths from a base search dir using include/exclude patterns.
It should allow for prefixing all the paths founds with a given prefix - in other to easily created URL-based paths.
All story paths should be normalised paths with '/' as separator.
It should allow the finding of java sources and creation of corresponding RunnableStory instances using a given EmbedderClassLoader.