Update setup execs to composer 0.16.2
The setup_OSX.sh script and the setup_Ubuntu_Part_1.sh scripts were installing composer version 0.16.0. These have been updated to install composer version 0.16.2.
The setup_OSX.sh script and the setup_Ubuntu_Part_1.sh scripts were installing composer version 0.16.0. These have been updated to install composer version 0.16.2.