building in travis

Author: yazgazan

.travis.yml

@@ -7,6 +7,7 @@ before_install:
     - go get github.com/mattn/goveralls
 
 script:
+    - go build
     - go test -v ./...
     - go test -v -covermode=count -coverprofile=coverage.out ./diff
     - $GOPATH/bin/goveralls -coverprofile=coverage.out -service=travis-ci -repotoken $COVERALLS_TOKEN