[AIRFLOW-2401] Document the use of variables in Jinja template
Closes #2847 from moe-nadal-ck/patch-1
Project: http://git-wip-us.apache.org/repos/asf/incubator-airflow/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-airflow/commit/a67c13e4
Tree: http://git-wip-us.apache.org/repos/a
Repository: incubator-airflow
Updated Branches:
refs/heads/master 8921e7d70 -> a67c13e44
[AIRFLOW-2401] Document the use of variables in Jinja template
Closes #2847 from moe-nadal-ck/patch-1
Project: http://git-wip-us.apache.org/repos/asf/incubator-airflow/repo
Commit: http://git-wip-us.apac