update docs

bin/jenkins/mvn

@@ -2,6 +2,8 @@
 #
 # Copyright (c) 2020 Bubble, Inc.  All rights reserved. For personal (non-commercial) use, see license: https://getbubblenow.com/bubble-license/
 #
+# Wraps mvn to ensure each Jenkins job uses its own local m2 repository.
+#
 THISDIR=$(cd $(dirname ${0}) && pwd)
 WORKSPACE_DIR=$(cd ${THISDIR}/../.. && pwd)
 WORKSPACE_NAME=$(basename ${WORKSPACE_DIR})