added an allow_failure for Django 2.0 since the polymorphic release is not out yet

vdboor · vdboor · commit 7a925a602dda · 2018-01-18T15:49:08.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -10,6 +10,9 @@ env:
 - PACKAGES="django>=1.10,<1.11"
 - PACKAGES="django>=1.11,<1.12"
 - PACKAGES="django>=2.0,<2.1"
+matrix:
+  allow_failures:
+  - env: PACKAGES="django>=2.0,<2.1"
 before_install:
 - pip install codecov
 install:
