ci(heroku): Force Python version

In order to be compatible with the now heroku-18 stack
guonning · Apr 20, 2019 · 4b92015 · 4b92015
1 parent aa04d77
commit 4b92015
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/runtime.txt b/runtime.txt
@@ -0,0 +1 @@
+python-2.7.16