make the install_node.sh more robust - refs #177
make the install_node.sh more robust - refs #177

oxidase/node-osrm,Project-OSRM/node-osrm,KnockSoftware/node-osrm,oxidase/node-osrm,Project-OSRM/node-osrm,KnockSoftware/node-osrm,Project-OSRM/node-osrm,KnockSoftware/node-osrm,KnockSoftware/node-osrm,oxidase/node-osrm