fix ci

.travis.yml

@@ -16,9 +16,9 @@ addons:
     packages:
     - shellcheck
 
-before_install:
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then brew update          ; fi
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install shellcheck; fi
+#before_install:
+#  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update          ; fi
+#  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install shellcheck; fi
   
 script:
   - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then then curl -sSL $SHFMT_URL -o ~/shfmt ; fi