Add 1.10 to Travis
diff --git a/.travis.yml b/.travis.yml
index f41fb3c..31fbbdd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,7 @@
   - 1.7
   - 1.8
   - 1.9
+  - 1.10
   - tip
 matrix:
   allow_failures: