catkin_make fails

[danielewis579]

hello
thank you for the demo and the simulation.
i was trying to install and run the simulation on my Ubuntu 16.04 using ROS and cartographer_ros.
i have some questions:

1. do i need to download the git files to catkin_ws/ or to catkin_ws/src/ (i put the file in the catkin_ws/ folder)?
2. how do i know that all the rosdep were installed correctly (after calling : rosdep install --from-paths src --ignore-src --rosdistro=$ROS_DISTRO -y)?
3. when running "catkin_make_isolated --install --use-ninja" no husky package was detected and build.
   please help in understanding what want wrong in the instalation
   thank you
   daniel