update latest travis

k-okada · k-okada · commit 48a3712c9e7e · 2015-04-24T00:11:09.000+09:00
diff --git a/.travis b/.travis
@@ -1 +1 @@
-Subproject commit 0267f8e091d259d03a713c5741a0a153bce533a0
+Subproject commit 6f6b4f5dbc3a2fba4bc8a10d20d801e7ac3595df
