Add a --json-module command-line option to the `couchdb-replicate` script.
Add a --json-module command-line option to the `couchdb-replicate` script.

hdmessaging/couchbase-mapping-python,jur9526/couchdb-python,gcarranza/couchdb-python,ssaavedra/couchdb-python,oliora/couchdb-python,erikdejonge/rabshakeh-couchdb-python-progress-attachments