[conformal/btcdb] 05ff5b: Add NewestSha example.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcdb
  Commit: 05ff5bd8ec32c9fec8f8c923292c97603384b6a2
      
https://github.com/conformal/btcdb/commit/05ff5bd8ec32c9fec8f8c923292c97603384b6a2
  Author: Dave Collins <da...@conformal.com>
  Date:   2014-07-08 (Tue, 08 Jul 2014)

  Changed paths:
    M README.md
    M example_test.go

  Log Message:
  -----------
  Add NewestSha example.