Improve documentation.

Add tests for in/out host records.

Add validation in Write for options that should only have one value,
remove comma delimited items.

Add option to prevent snmp scanning, just create profiles for what
came in on the command line. (Done, document)

Ensure that you can custom map a custom key. ie:
	NE='notifications_enabled' 
	and have it queried from the remote host (services can do this already)

Perhaps allow custom text that will be added to each profile.

Improve consistency between configuration runs (ie: don't remove a
host thats already defined and was down during the scan).


