Add goreleaser to travis. (#46)

.travis.yml

@@ -2,6 +2,11 @@ language: go
 go:
 - 1.8.5
 - 1.9.2
+addons:
+  apt:
+    packages:
+    # needed for the nfpm pipe:
+    - rpm
 install:
 - go get github.com/nats-io/go-nats
 - go get github.com/nats-io/gnatsd
@@ -22,4 +27,12 @@ script:
 - go test -v -race $EXCLUDE_VENDOR -p 1
 after_success:
 - if [[ "$TRAVIS_GO_VERSION" == 1.9.* ]]; then ./scripts/cov.sh TRAVIS; fi
-- if [[ "$TRAVIS_GO_VERSION" == 1.9.* ]] && [ "$TRAVIS_TAG" != "" ]; then ./scripts/cross_compile.sh $TRAVIS_TAG; ghr --owner nats-io --token $GITHUB_TOKEN --draft --replace $TRAVIS_TAG pkg/; fi
+
+# calls goreleaser
+deploy:
+- provider: script
+  skip_cleanup: true
+  script: curl -sL http://git.io/goreleaser | bash
+  on:
+    tags: true
+    condition: $TRAVIS_OS_NAME = linux