Bump Travis to Go 1.6.3
diff --git a/.travis.yml b/.travis.yml
index 4bb6878..f27ab60 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,7 @@
 go:
   - 1.4.3
   - 1.5.4
-  - 1.6.2
+  - 1.6.3
   - tip
   
 os: