Auto-update dependencies. [(#1406)](GoogleCloudPlatform/python-docs-samples#1406)

dpebot · Jon Wayne Parrott · commit 7aba51cdd6a6 · 2018-03-16T09:05:55.000-07:00
diff --git a/samples/samples/requirements.txt b/samples/samples/requirements.txt
@@ -1,2 +1,2 @@
 google-cloud-spanner==1.2.0
-futures ; python_version < '3'
+futures==3.2.0; python_version < "3"
