fix iojs-install-script#6

setup-node-ubuntu.bash

@@ -38,8 +38,8 @@ if [ -n "${NODEJS_VER}" ]; then
     exit 1
   fi
 
+  mkdir -p ${NODEJS_UNTAR}/
   tar xf ${NODEJS_LOCAL} -C ${NODEJS_UNTAR}/ --strip-components=1
-  #tar xf ${NODEJS_LOCAL} -C /tmp/
   rm ${NODEJS_UNTAR}/{LICENSE,CHANGELOG.md,README.md}
   sudo rsync -a "${NODEJS_UNTAR}/" /usr/local/