完成d.ts定义的优化

types/icon.d.ts

@@ -0,0 +1,20 @@
+// Type definitions for iview 3.0.1
+// Project: https://github.com/iview/iview
+// Definitions by: yangdan
+// Definitions: https://github.com/yangdan8/iview.git
+import Vue, { VNode } from "vue";
+
+export declare class Icon extends Vue {
+  /**
+   * 图标的名称
+   */
+  type?: string;
+  /**
+   * 图标的大小，单位是 px
+   */
+  size?: number | string;
+  /**
+   * 图标的颜色
+   */
+  color?: string;
+}