tag formatting

.travis.yml

@@ -18,7 +18,7 @@ before_deploy:
   - cd $TRAVIS_BUILD_DIR
   - mv target/release/oculante target/release/oculante.$TRAVIS_OS_NAME
   - git tag $TRAVIS_OS_NAME-$(git log --format=%h -1)
-  - export tag $TRAVIS_OS_NAME-$(git log --format=%h -1)
+  - export TRAVIS_TAG=$TRAVIS_OS_NAME-$(git log --format=%h -1)
 deploy:
   provider: releases
   skip_cleanup: true