add an http->socks5 proxy implementation

this is useful so that a standard `ssh -D 1080` will let you gateway
into your private openstack cluster
add an openstack image picker
Update README.rst

Minor wording changes.
Update README.rst

minor content edits.
update tagline
add dns via /etc/hosts
Merge pull request #1 from termie/master

Pullin forward the awesome.