Update Travis-CI status badge to .com from .org

Change-Id: I77091d541d81463b33731fc9b1a2971ce2e8a1f8
diff --git a/README.md b/README.md
index b091574..868cbc0 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-[![Build Status](https://travis-ci.org/ceres-solver/ceres-solver.svg?branch=master)](https://travis-ci.org/ceres-solver/ceres-solver)
+[![Build Status](https://app.travis-ci.com/ceres-solver/ceres-solver.svg?branch=master)](https://app.travis-ci.com/ceres-solver/ceres-solver)
 
 Ceres Solver
 ============