Make sure mocha exits

services/web/bin/unit_test

@@ -1,7 +1,7 @@
 #!/bin/bash
 set -e;
 
-MOCHA="node_modules/.bin/mocha --recursive --reporter spec"
+MOCHA="node_modules/.bin/mocha --exit --recursive --reporter spec"
 
 $MOCHA "$@" test/unit/js