Add update command.
Merge branch 'develop' into feature-update

Conflicts:
	main.go
Merge branch 'develop' into feature-update

Conflicts:
	main.go

Signed-off-by: Adam Jimerson <vendion@gmail.com>
Fix the command for server keep alive.
List commands on the usage line.
Merge branch 'develop' into feature-update
Add the ability to update a host record.
Merge branch 'feature-update' into develop
Add documentation for updating host details.
Add the ability to display a version number.
Merge branch 'develop'