shbin dl flatten contents in a remote directory

[mgaitan]

shbin/shbin.py

Lines 107 to 109 in f320439

	# FIXME currently this will flatten the tree:
	# suposse dir/foo.py and dir/subdir/bar.py
	# Then `$ shbin dl dir` will get foo.py and bar.py in the same dir.

we need to fix it