code: function install(Vue, options) {
  
      var type = Object.prototype.toString.call(options);
      if (type === '[object String]') {
          Vue.component(options, feather);
      } else if (type === '[object Object]') {
          if (options.props) {
              if (options.props.baseClass) {
                  feather.props.baseClass = options.props.baseClass;
              }
              if (options.props.classPrefix) {
                  feather.props.classPrefix = options.props.classPrefix;
              }
          }
          feather.mixins = [options];
          Vue.component(options.name || 'icon', feather);
      } else {
          Vue.component('icon', feather);
      }
  }
docs: Vue plugins
  @param Vue
  @param componentName  specify the component name