Reverts path change. Fix bash syntax error

ci-support/circleci_mac.sh

@@ -9,7 +9,7 @@ set -o errexit
 set -o pipefail
 
 export UVCDAT_ANONYMOUS_LOG=False
-# export PATH=${HOME}/miniconda/bin:${PATH}
+export PATH=${HOME}/miniconda/bin:${PATH}
 
 cd frontend
 npm install
@@ -19,9 +19,9 @@ cd frontend
 npm run coverage
 RESULT=$?
 npm run coveralls
-RESULT=$RESULT + $?
+RESULT=$(($RESULT + $?))
 cd ..
-echo "test commands exit result:",$RESULT
+echo "test commands exit result: $RESULT"
 if [ $RESULT -eq 0 -a $CIRCLE_BRANCH == "master" ]; then conda install -n root conda-build anaconda-client ; fi
 if [ $RESULT -eq 0 -a $CIRCLE_BRANCH == "master" ]; then bash ./ci-support/conda_upload.sh ; fi
 exit $RESULT