update tox

Update tox so that all environments are recognized. py34, py35 environments weren't recognized with tox 1.4.
xu-dan · Feb 10, 2016 · d7ce6ac · d7ce6ac
1 parent 51d62f3
commit d7ce6ac
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/requirements.txt b/requirements.txt
@@ -1,4 +1,4 @@
-tox==1.4
+tox==2.3.1
 docutils>=0.10
 # botocore and the awscli packages are typically developed
 # in tandem, so we're requiring the latest develop