ENYO-3485: bug fix regarding temp node module to make directory under temp path (defect on ubuntu)

When there is no proper global variable about temp path, temp node module assume that /Users/junilkim/tmp as a temp path, but if there is no direcoty at that location, it cause error when temp.mkdir() function is called

Enyo-DCO-1.1-Signed-off-by:: Junil Kim <logyourself@gmail.com>
Merge pull request #12 from enyojs/ENYO-3485

ENYO-3485: bug fix regarding temp node module to make directory under temp path (defect on ubuntu)