[conformal/btcd] d4f980: Show usage on no params to btcctl.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcd
  Commit: d4f980c71f89080671f0f0232b632e924bb5ea41
      
https://github.com/conformal/btcd/commit/d4f980c71f89080671f0f0232b632e924bb5ea41
  Author: Dave Collins <da...@conformal.com>
  Date:   2013-10-22 (Tue, 22 Oct 2013)

  Changed paths:
    M util/btcctl/btcctl.go

  Log Message:
  -----------
  Show usage on no params to btcctl.