Added multi-file support for examples and schema development, thanks Richard W.
Merge pull request #56 from danbri/master

Fixed missing 'name' property in Event example, reported by Pierre Far.
Merge branch 'sdo-multifile'
This adds ability to develop schemas as data/*.rdfa with examples data/*examples.txt
For final contributions, schemas should be integrated. During development, separate
files (especially the examples) make comparison of parallel branches easier. We may
move to separate files per topic for examples in future.
Removed commented out earlier lines.
Removed commented lines.