[fix] Use process.execPath for spawning.

Author: AvianFlu

lib/forever/monitor.js

@@ -70,7 +70,7 @@ var Monitor = exports.Monitor = function (script, options) {
   // Setup the command to spawn and the options to pass
   // to that command.
   //
-  this.command   = options.command || 'node';
+  this.command   = options.command || process.execPath;
   this.args      = options.options || [];
   this.spawnWith = options.spawnWith || {};
   this.sourceDir = options.sourceDir;