[conformal/btcwire] 7a1a26: Update TravisCI to work with go tip.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcwire
  Commit: 7a1a260b78b7251fcb53ce6664c370d70d2a11ba
      
https://github.com/conformal/btcwire/commit/7a1a260b78b7251fcb53ce6664c370d70d2a11ba
  Author: Dave Collins <da...@conformal.com>
  Date:   2014-11-14 (Fri, 14 Nov 2014)

  Changed paths:
    M .travis.yml
    A get_ci_cover.sh

  Log Message:
  -----------
  Update TravisCI to work with go tip.

This commit modifies the .travis.yml to invoke a new script which has also
been added that gets the test coverage tool from the new path needed by go
tip.