Move iptables into sub package
Add DaemonConfig

Use a config type for accessing data
Add bridgeiface name to config
Add option to disable iptables
Move proxy into sub package
Add flag to set the default ip ports are bound to
Refactor internal port mappings
Add destination to iptables conf
Add warning and build error for public image ports
Add -expose flag to expose ports without publishing
Add IP to APIPort struct