Fix dataroles quickstart by changing to be dependent on dynamicvdb-datafederation quickstart, which then enable the removal of suplicate support file (i.e., -ds.xml, schema ddl, and market data files).  Also enhanced simpleclient so that it submitted INSERT/UPDATE/DELETE statements via executeUpdate, otherwise, there's a client exception is thrown.
Merge pull request #20 from vhalbert/fix_dataroles_qs

Fix dataroles quickstart
Update README.md

Updated to show the dynamicvdb-dataroles is now dependent on dynamicvdb-datafederation.