New rewrite of provider. By moving to promises we should no longer have issues with double-quits.

lib/cli.js

@@ -28,10 +28,6 @@ program
     , 'name (or os.hostname())'
     , String
     , os.hostname())
-  .option('-t, --restart-threshold <ms>'
-    , 'restart worker only if it stays alive for longer than this'
-    , Number
-    , 10000)
   .option('--min-port <port>'
     , 'minimum port number for worker use'
     , Number
@@ -57,8 +53,6 @@ program
 
     require('./roles/provider')({
       name: options.name
-    , restartThreshold: options.restartThreshold
-    , restartTimeout: 1000
     , killTimeout: 10000
     , ports: cliutil.range(options.minPort, options.maxPort)
     , filter: function(device) {