gulpjs/gulp — pull request #524 by yapcheahshen (2014-06-12 06:05:42+00:00)
Title: Export the directory where user invoke gulp to gulpfile.js

since 1.2-2.4 (11/12/13)
"chdir to gulpfile directory before loading it"
in gulpfile.js, gulp.cwd stores the directory where user invoke gulp.
this is useful when user working directory has no gulpfile.js and don't want to use --cwd=.