fix version for windows

Author: andyscott

.travis.yml

@@ -30,7 +30,7 @@ before_install:
   - |
     if [[ "${TRAVIS_OS_NAME}" == "windows" ]]; then
       choco install jdk8 -params 'installdir=c:\\java8'
-      choco install bazel --version ${V}
+      choco install bazel --version 0.28.1
     fi
   - cat .bazelrc.travis >> .bazelrc