[conformal/btcwallet] 6eabd7: Remove Go 1.2 and add release to TravisCI builds.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcwallet
  Commit: 6eabd7c014527aec6823e666df1a6425c4da86d9
      
https://github.com/conformal/btcwallet/commit/6eabd7c014527aec6823e666df1a6425c4da86d9
  Author: Dave Collins <da...@conformal.com>
  Date:   2014-12-11 (Thu, 11 Dec 2014)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Remove Go 1.2 and add release to TravisCI builds.

Our policy is to only ensure the code compiles for the latest Go release
minus one version.  Since Go 1.4 has now been released, this commit
updates TravisCI to remove Go 1.2 from the build matrix.  While here, add
release to the matrix which should have been there before anyways.