Fix #4.

.travis.yml

@@ -17,7 +17,7 @@ os:
   - osx
 
 go:
-  - master
+  - "1.11.x"
 
 install:
   # build nim from our own branch - this to avoid the day-to-day churn and
@@ -38,6 +38,7 @@ install:
   #       cd ../.. ;
   #     }"
   # - "export PATH=$PWD/nim/$NIMVER/bin:$PATH"
+  - echo $TRAVIS_GO_VERSION
   - go get -v github.com/libp2p/go-libp2p-daemon
   - cd $GOPATH/src/github.com/libp2p/go-libp2p-daemon
   - make