[conformal/btcchain] c3abaf: Println -> Printf when using formatting directives...

[David Hill]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcchain
  Commit: c3abafc7eb86f90f17daa064782f4e5faad10ce3
      
https://github.com/conformal/btcchain/commit/c3abafc7eb86f90f17daa064782f4e5faad10ce3
  Author: David Hill <dh...@conformal.com>
  Date:   2014-08-28 (Thu, 28 Aug 2014)

  Changed paths:
    M example_test.go

  Log Message:
  -----------
  Println -> Printf when using formatting directives.

This makes go vet happy.