realized client should actually be host

I was calling it client because of Client in Client Config Dir.  But it is a host that is connecting to the server, not a client.
A client should actually be an OpenVPN client connection to another OpenVPN server.
changed subnet to be called network
added get and set methods to server
added a note about permissions
updated the readme
added requires to net/openvpn.rb
stopped parser from touching the filesystem
bump to version 0.1