Add back rigidCube to the in-source build list (#883)

CMakeLists.txt

@@ -272,6 +272,7 @@ if(TARGET dart)
     dart_add_example(examples/mixedChain dart dart-utils-urdf dart-gui)
     dart_add_example(examples/operationalSpaceControl dart dart-utils-urdf dart-gui)
     dart_add_example(examples/rigidChain dart dart-utils-urdf dart-gui)
+    dart_add_example(examples/rigidCubes dart dart-utils-urdf dart-gui)
     dart_add_example(examples/rigidLoop dart dart-utils-urdf dart-gui)
     dart_add_example(examples/rigidShapes dart dart-utils-urdf dart-gui)
     dart_add_example(examples/simpleFrames dart dart-utils-urdf dart-gui)

ci/install.sh

@@ -1,5 +1,4 @@
-if [ "$TRAVIS_PULL_REQUEST" = "false" ] && [ "$COMPILER" = "CLANG" ]; then exit; fi
+if [ "$TRAVIS_PULL_REQUEST" = "false" ] && [ "$TRAVIS_OS_NAME" = "linux" ] && [ "$COMPILER" = "CLANG" ]; then exit; fi
 
 if [ "$TRAVIS_OS_NAME" = "linux" ]; then 'ci/install_linux.sh' ; fi
 if [ "$TRAVIS_OS_NAME" = "osx"   ]; then 'ci/install_osx.sh'   ; fi
-

examples/rigidCubes/Main.cpp

@@ -32,13 +32,15 @@
 #include <iostream>
 
 #include <dart/dart.hpp>
+#include <dart/utils/utils.hpp>
 
 #include "MyWindow.hpp"
 
-int main(int argc, char* argv[]) {
+int main(int argc, char* argv[])
+{
   // create and initialize the world
   dart::simulation::WorldPtr myWorld
-      = dart::utils::SkelParser::readWorld("file://sample/skel/cubes.skel");
+      = dart::utils::SkelParser::readWorld("dart://sample/skel/cubes.skel");
   assert(myWorld != nullptr);
   Eigen::Vector3d gravity(0.0, -9.81, 0.0);
   myWorld->setGravity(gravity);