fixed bad synapse ID in README
add custom mimetype text/x-r for R source code
added to docstrings
SYNR-472: chunked file upload part 2
Fix for SYNR-446: store should update entities to new version, now respects createOrUpdate
be ready for PLFM-1905, which changes error code from 500 to 409 when trying to createan entity and one with a given name and parent already exists
Merge pull request #57 from cbare/develop

chunked file upload part 2