Setup Codecov (#235)

.travis.yml

@@ -13,9 +13,6 @@ script:
   - if [ -n "$(go fmt ./...)" ]; then exit 1; fi
   - ./test.sh
   - ./benchmark.sh $TRAVIS_BRANCH https://github.com/$TRAVIS_REPO_SLUG.git
-before_install:
-  - go get github.com/axw/gocov/gocov
-  - go get github.com/mattn/goveralls
-  - if ! go get code.google.com/p/go.tools/cmd/cover; then go get golang.org/x/tools/cmd/cover; fi
+
 after_success:
-  - $HOME/gopath/bin/goveralls -service=travis-ci -coverprofile=coverage.out -repotoken $COVERALLS_TOKEN
+  - bash <(curl -s https://codecov.io/bash)