[NTG-context] first-setup.sh

Hi all, after a lot of confusion I discovered that first-setup.sh is not Andy-proof. If there is a broken internet connection, the update lua process works and pushes the rsync error message very quickly out of the terminal. I propose to change the rsync line to rsync -rlptv rsync://contextgarden.net/minimals/setup/$platform/bin . || { echo "Cannot reach the repository"; exit 1; } Andy P.S. Someone already did the same to the ruby error message, it is copied a second time at the end.