added travis.yml

tests/main.cpp

@@ -8,7 +8,7 @@
 // -----------------------------------------------------------------------------
 
 int main (int argc, char** argv) {
-  ::testing::GTEST_FLAG(throw_on_failure) = false;
+  ::testing::GTEST_FLAG(throw_on_failure) = true;
   ::testing::InitGoogleMock(&argc, argv);
   return RUN_ALL_TESTS();
 }