Merge pull request #3 from dallasmarlow/variable-args

Adds support for variable arguments, uses exceptions quite a bit more
stash
add support for init local filesystems
rake release
version bump for release
invoke git:tag on release
Merge branch 'master', remote-tracking branch 'origin' into add-hosts
Adds File.read_open?, File.write_open?, DFS.get_hosts, :user option to initialize