#!/bin/bash
#based on
#http://dev.px4.io/ros-mavros-installation.html
if [ ! -d /DroneLab/ros/catkin_ws/build ] ; then
source /opt/ros/indigo/setup.bash
cd /DroneLab/ros/catkin_ws
catkin_make install && cd build && make install
else
	echo "no need to install catkin"
fi

#!/bin/bash
#based on
#http://dev.px4.io/ros-mavros-installation.html
if [ ! -d /DroneLab/ros/catkin_ws/build ] ; then
#source /opt/ros/indigo/setup.bash
source /opt/ros/kinetic/setup.bash
cd /DroneLab/ros/catkin_ws
catkin_make install && cd build && make install
else
	echo "no need to install catkin"
fi

Update to install ROS kinetic as default in the build script
Update to install ROS kinetic as default in the build script