Move `grunt test` to ./travis.sh since it now invokes spectron

FREEBIE

.travis.yml

@@ -11,7 +11,6 @@ script:
   - yarn run generate
   - ./node_modules/.bin/build --em.environment=$SIGNAL_ENV --config.mac.bundleVersion='$TRAVIS_BUILD_NUMBER' --publish=never
   - ./travis.sh
-  - yarn test
 env:
   global:
     - SIGNAL_ENV: production

travis.sh

@@ -5,4 +5,5 @@ if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then
   sh -e /etc/init.d/xvfb start
   sleep 3
 fi
+grunt test
 grunt test-release:$TRAVIS_OS_NAME