Install go

Author: rmichela

.circleci/config.yml

@@ -18,6 +18,7 @@ shared: &shared
         command: |
           sudo curl -sL -o /usr/bin/gimme https://raw.githubusercontent.com/travis-ci/gimme/master/gimme
           sudo chmod +x /usr/bin/gimme
+          gimme 1.12
           sudo bash -c eval "$(gimme 1.12)"
           go version