code: function loadModulePlugins(modulePlugins) {
          var serverModules = {};
          var me = this;
  
          // add modules from each plugin to the serverModules map
          _.each(modulePlugins, function (modulePlugin) {
              _.extend(serverModules, me.loadModules(modulePlugin.rootDir, modulePlugin.serverModuleDirs));
          });
  
          return serverModules;
      }
docs: Loop through each plugin and add each module to a map
  @param modulePlugins