Revert "Only setup the model on "NotFound" if a tombstone was returned"

This reverts commit 1ed4ed5f0da94d52dcd019e13183bcb3e27271c6.  This fixes
issue #54.
Merge pull request #58 from MJDSys/RevertCommit1ed4ed5

Revert "Only setup the model on "NotFound" if a tombstone was returned"