Globstar / glob pattern to match components subdirectories path, in gulp copy task.

The current path / glob pattern was not work for the copy task, so its failed to copy components subdirectories when gulp run.

    ./bower_components/foundation-apps/js/angular/components/**.*

Glob pattern expecting {something/dir}.{0 or more characters in a single path portion/extension}, there's no file except >= 1 subdirectories in it. Change to:

    ./bower_components/foundation-apps/js/angular/components/**/**.*

then it matches zero or more directories / subdirectories.