fix: install node 7

Author: christophwitzko

.travis.yml

@@ -2,6 +2,8 @@ language: go
 go:
   - 1.8.x
 install:
+  - nvm install 7
+  - node -v && npm -v
   - go get github.com/Masterminds/glide
   - go get github.com/mitchellh/gox
   - go get github.com/tcnksm/ghr

release

@@ -6,4 +6,5 @@ set -e
 export VERSION=$(cat .version)
 gox -ldflags="-s -w -X main.SRVERSION=$VERSION" -output="bin/{{.Dir}}_v"$VERSION"_{{.OS}}_{{.Arch}}" ./cmd/semantic-release/
 ghr $(cat .ghr) bin/
+
 cd ./npm-package && npm publish