don't let kill the script if oref0 already exists

bin/openaps-install.sh

@@ -73,7 +73,7 @@ sed -i "s/#compress/compress/g" /etc/logrotate.conf
 # Change the openaps-packages.sh curl command to the following before merging dev to master:
 #curl -s https://raw.githubusercontent.com/openaps/oref0/$BRANCH/bin/openaps-packages.sh | bash -
 curl -s https://raw.githubusercontent.com/openaps/oref0/dev/bin/openaps-packages.sh | bash -
-mkdir -p ~/src; cd ~/src && git clone git://github.com/openaps/oref0.git ; (cd oref0 && git checkout $BRANCH && git pull)
+mkdir -p ~/src; cd ~/src && ls -d oref0 && (cd oref0 && git checkout $BRANCH && git pull) || git clone git://github.com/openaps/oref0.git
 echo "Press Enter to run oref0-setup with the current release ($BRANCH branch) of oref0,"
 read -p "or press ctrl-c to cancel. " -r
 cd && ~/src/oref0/bin/oref0-setup.sh