Emit to resource dirs instead of asset dirs

- Emitted files are on the class path for Jetty eg to serve.
0.0-2411-4 -- Emit output as resources
Merge pull request #12 from martinklepsch/master

more descriptive outout file in unified-mode
0.0-2411-5 -- Rename output file created by --unified-mode
basic idempotent shim