Travis: Test with Go 1.7
diff --git a/.travis.yml b/.travis.yml
index cdfeace..24cae4c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,4 +7,5 @@
   - 1.4
   - 1.5
   - 1.6
+  - 1.7
   - tip