There are a few additional packages that are required to be installed for a successful build that have not been mentioned in the installation. In case RotorS does not get built even after installing these, calling catkin clean and then rebuilding solves the problem.

These packages can be installed using the following commands -
sudo -H pip install future
sudo apt-get install ros-kinetic-octomap-msgs ros-kinetic-octomap-mapping libgoogle-glog-dev ros-kinetic-control-toolbox protobuf-compiler protobuf-c-compiler