[conformal/btcjson] cbd3d7: Add initial support for submitblock command.

[John C. Vernaleo]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcjson
  Commit: cbd3d730a91fa92a851aa4aa97053a0dc628e8c4
      
https://github.com/conformal/btcjson/commit/cbd3d730a91fa92a851aa4aa97053a0dc628e8c4
  Author: John C. Vernaleo <j...@conformal.com>
  Date:   2013-10-22 (Tue, 22 Oct 2013)

  Changed paths:
    M jsonapi.go
    M jsonapi_test.go

  Log Message:
  -----------
  Add initial support for submitblock command.

Closes #7