make build steps verbose

Author: wjwwood

.travis.yml

@@ -30,8 +30,8 @@ script:
   # Enable install space
   - catkin config --install
   # Build [and Install] packages
-  - catkin build --no-status -i --no-notify -DCMAKE_BUILD_TYPE=Release
+  - catkin build --no-status -vi --no-notify -DCMAKE_BUILD_TYPE=Release
   # Build tests
-  - catkin build --no-status -i --no-notify --make-args tests
+  - catkin build --no-status -vi --no-notify --make-args tests
   # Run tests
   - catkin run_tests