Update setup-node-mavericks.bash

setup-node-mavericks.bash

@@ -44,7 +44,7 @@ if [ -n "${NODEJS_VER}" ]; then
   #sudo /usr/sbin/installer -pkg "${NODEJS_PKG}" -target /
   
   # When using .tar.gz
-  sudo tar xf "${NODEJS_PKG}" -C "{NODEJS_UNTAR}/"
+  sudo tar xf "${NODEJS_PKG}" -C "${NODEJS_UNTAR}/"
   rm -f ${NODEJS_UNTAR}/{LICENSE,CHANGELOG.md,README.md}
   sudo rsync -a "${NODEJS_UNTAR}/" "$node_install_path/"