[conformal/btcd] aa1d72: Update pre-release and README.me to beta.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcd
  Commit: aa1d722dd6a8cdfbe28ec8e3e40dab761d12e571
      
https://github.com/conformal/btcd/commit/aa1d722dd6a8cdfbe28ec8e3e40dab761d12e571
  Author: Dave Collins <da...@conformal.com>
  Date:   2014-05-23 (Fri, 23 May 2014)

  Changed paths:
    M README.md
    M util/btcctl/version.go
    M version.go

  Log Message:
  -----------
  Update pre-release and README.me to beta.

This is part of the changes for #130.