Proper setup for local testing

[ethanfrey]

To fully test locally, we don't just need wasmd, but also a faucet and all contracts deployed to known codeIDs.
There was some discussion of the codeIDs here: #69 (comment)
Also, there is no cosmjs script to upload the name-service contract (which is part of the app suite).

Please review what is needed for a few commands to do full setup and run with local mode. Also, ensure to update all docs if we add some more setup commands.