Generate code coverage with coveralls

.travis.yml

@@ -11,10 +11,17 @@ branches:
 before_install:
   - wget http://apache.claz.org/zookeeper/zookeeper-3.4.6/zookeeper-3.4.6.tar.gz
   - tar -zxvf zookeeper*tar.gz
+  - go get github.com/mattn/goveralls
+  - go get golang.org/x/tools/cmd/cover
 
 script:
   - go build ./...
   - go fmt ./...
   - go vet ./...
   - go test -i -race ./...
-  - go test -v -race ./...
+  - go test -race -covermode atomic -coverprofile=profile.cov ./zk
+  - goveralls -coverprofile=profile.cov -service=travis-ci
+
+env:
+  global:
+    secure: Coha3DDcXmsekrHCZlKvRAc+pMBaQU1QS/3++3YCCUXVDBWgVsC1ZIc9df4RLdZ/ncGd86eoRq/S+zyn1XbnqK5+ePqwJoUnJ59BE8ZyHLWI9ajVn3fND1MTduu/ksGsS79+IYbdVI5wgjSgjD3Ktp6Y5uPl+BPosjYBGdNcHS4=