Corrects syntax (I think).

Author: ryasmi

test.sh

@@ -26,7 +26,7 @@ if [ "${DEVELOP}" = "${TRAVIS_BRANCH}" ]; then
   npm install -g grunt-cli > /dev/null
   npm install > /dev/null
   grunt --bail --reporter=dot --endpoint="http://0.0.0.0:8000/data/xAPI/" --username="1484c2ac05269b8c5479a1dd6a0d6370991fd6a1" --password="f0ef3d8062805c0fc1675beb8ac0715c75df13cb" --xapi-version="1.0.1"
-  if [[ $? != 0 ]]; then exit $?; fi
+  if [ $? != 0 ]; then exit $?; fi
 
   # Stops the server.
   ps aux | grep [p]hp | awk '{print $2}' | xargs kill