docs: function(name, pa){
          var pa = pa || name;
  
          if (!this.isExist(name)){
              var realPath = path.join(_pluginBase, pa, 'main.js');
              var pluginReg;
              if (!fs.existsSync(realPath)) {
                  pluginReg = require(pa);
              } else {
                  pluginReg = require(fs.realpathSync(realPath));
              }
  
              _pluginList.push(new Plugin(name, pa, pluginReg));
              
              pluginReg(PluginAPI);
          }
      }