message: use travis build number to create alpha
diff: @@ -80,8 +80,7 @@ fi
  if [[ "${EXEC_ALPHA}" == true ]]
  then
  - ISH_KEY=$(git rev-parse HEAD)
  - NEXT_VERSION=${NEXT_VERSION}-${ISH_KEY}
  + NEXT_VERSION=${NEXT_VERSION}-${TRAVIS_BUILD_NUMBER}
  fi
  if [[ "${EXEC_BETA}" == true ]]
  