generate code coverage reports with codecov

.travis.yml

@@ -19,5 +19,17 @@ env:
 # second part of the GOARCH workaround
 # now actually set the GOARCH env variable to the value of the temporary variable set earlier
 before_install:
+  - go get golang.org/x/tools/cmd/cover
+  - go get github.com/onsi/ginkgo/ginkgo
+  - go get github.com/onsi/gomega
   - export GOARCH=$TRAVIS_GOARCH
   - go env # for debugging
+
+script:
+  - go get -t ./...
+  - ginkgo -cover -r
+
+after_success:
+  - cat quic-go.coverprofile > coverage.txt
+  - cat */*.coverprofile >> coverage.txt
+  - bash <(curl -s https://codecov.io/bash) -f coverage.txt