Merge pull request #20 from salt-formulas/update-dependencies

Update dependencies, lgtm
diff --git a/requirements.txt b/requirements.txt
index ea72e95..82266c1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,5 @@
 pyparsing
 pyyaml
 pygit2
+output
+storage