Allow more notify and restart options #283
                
     Merged
            
            
          
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Added -notify-container and -notify-signal to expand on the -notify-sighup.
Passing -1 to notify-signal is a special exception and calls docker restart on the container.
note: I couldn't figure out how to get this to build on my windows dev machine. So it's possible there are some issues., hopefully travis will tell me if there are.