lint just main code

lint.sh

@@ -4,7 +4,7 @@ set -o errexit
 # getting false positives due to this issue with pylint:
 # https://bitbucket.org/logilab/pylint/issues/701/false-positives-with-not-an-iterable-and
 
-find serializable tests -name '*.py' \
+find serializable -name '*.py' \
   | xargs pylint \
   --errors-only \
   --disable=unsubscriptable-object,not-an-iterable