(pouchdb/express-pouchdb#61) - {ok:true} for put

[nolanlawson]

This ensures that all adapters (even Cloudant)
return ok:true for put/post/bulkDocs/putLocal.
Also it essentially reverts 54e5224 and instead
follows @calvinmetcalf's advice in that thread
to smooth out whatever the server sends us.

[nolanlawson]

manually confirmed that the pouchdb-server tests pass with this fix (assuming npm link to rvagg/node-levelup, since that still needs an update).

[nolanlawson]

BTW this also gets the basics tests working against Cloudant, whereas they were failing before. Unfortunately that's not the only thing that's broken, but it's at least a step.

[calvinmetcalf]

55ed0df