Add Postgres TLS negotiation support with the -pg flag
Merge pull request #15 from deafbybeheading/add-postgres

Add flag to test Postgres servers
Made an HTTP constant monitor

Now accepts a file with a newline seperated list of hosts in multiple
formats (domain:port, ip:port, [ip]:port, ip, [ip], domain).  Starts
up HTTP server on port :5779 and displays the status of the hosts.
Fixed up changed suggested in code review
Remove superflous variable declaration
adds listen address
Go templates cleaned up