1.优化dn,vh公共样式

2.新增oh公共类，用于隐藏dom元素
3.新增no-tap-color公共类，用于清空默认点击态

Author: gavinning

package.json

@@ -3,7 +3,7 @@
     "aimee": "app",
     "description": "Aimee的reset模块，用于处理配置文件",
     "main": "reset.less",
-    "version": "1.0.2",
+    "version": "1.0.3",
     "scripts": {
         "test": "uz -v"
     },

reset.less

@@ -57,8 +57,14 @@ a{
     text-decoration: none;
 }
 .dn{
-    display: none;
+    display: none !important;
+}
+.oh{
+    overflow: hidden !important;
 }
 .vh{
-    overflow: hidden;
-}
+    visibility: hidden !important;
+}
+.no-tap-color{
+    .tap-color();
+}