[conformal/btcgui] cdab3d: Set Go version for TravisCI to release.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcgui
  Commit: cdab3dff7f66e109b63526ec86647472ef104c01
      
https://github.com/conformal/btcgui/commit/cdab3dff7f66e109b63526ec86647472ef104c01
  Author: Dave Collins <da...@conformal.com>
  Date:   2013-12-10 (Tue, 10 Dec 2013)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Set Go version for TravisCI to release.

Also, ensure test dependencies are downloaded during go get.