Propagate windows service start parameters

[msays2000]

pass service start arguments via service interface

• In windows args passed into Execute are different than os.Args()
• In other OS, returning config.Arguments that developers can augment with or without os.Args().

$ sc.exe start
DESCRIPTION:
        Starts a service running.
USAGE:
        sc <server> start [service name] <arg1> <arg2> ...

[coveralls]

Coverage decreased (-0.2%) to 15.037% when pulling 3ba183c on msays2000:serviceStartArgs into 18c957a on kardianos:master.

[msays2000]

resolves : #82

[msays2000]

@kardianos please review.

[kardianos]

Arguments are used when a service is "created", not when it is ran.

See: https://github.com/kardianos/service/blob/master/service_windows.go#L231

[msays2000]

In windows arguments are also passed when service is "started" which is different than "created". Please propose, if I can add another property to differentiate them or merge the args

[kardianos]

I could maybe see something being added to the options bag, specifically for windows starting arguments. But in general, not a fan of the concept for this package.