chore(travis): fix build error

.travis.yml

@@ -14,10 +14,9 @@ notifications:
       secure: mkHfRTsuxidtOOORbJJ0Jspb/DSa8jAiQwWWUljqLwefy1p4HGC9P/rLdXXg3vsjiulCzyjEkfvDWAHXvu34GhGWfQuD8U140Fon1Os3AO5Hbme+yRmjXmTcgH8XetSLQufyBBMqXHMd6o1tkxXql1p54G1IShhgAdPNe76d5ZE=
 
 before_install:
-- npm install -g grunt-cli
+- npm install -g grunt-cli protractor
 
 before_script:
-- export REMOTE=ajoslin
 - export DISPLAY=:99.0
 - sh -e /etc/init.d/xvfb start
 

scripts/travis/ci.sh

@@ -43,8 +43,7 @@ function run {
     exit 0
   fi
 
-  LATEST_TAG=$(git describe --tags --abbrev=0)
-  LATEST_TAG_COMMIT=$(git rev-list $LATEST_TAG | head -n 1)
+  LATEST_TAG_COMMIT=$(git rev-list $(git describe --tags --abbrev=0) | head -n 1)
 
   if [[ "$TRAVIS_COMMIT" == "$LATEST_TAG_COMMIT" ]]; then
     IS_RELEASE=true