'sails www' command can't build exactly directory

# sails www
this command should make 'www' directory on current directory.
ref) https://github.com/balderdashy/sails/blob/master/bin/sails-www.js

but now, 'www' directory will be build on root directory of sails project.

I changed the destination of configulation such as adding 'process.env.PWD'.