英雄升级改为仅等级升级，slv根据等级确定，下步修改抽卡，改为以此抽多次卡

assets/resources/gui/element/btn1.prefab

@@ -163,11 +163,11 @@
       "__type__": "cc.Color",
       "r": 255,
       "g": 255,
-      "b": 0,
+      "b": 255,
       "a": 255
     },
     "_spriteFrame": {
-      "__uuid__": "f87f53f9-2fba-4a5b-968a-79a593311ab2@d27fa",
+      "__uuid__": "f87f53f9-2fba-4a5b-968a-79a593311ab2@55671",
       "__expectedType__": "cc.SpriteFrame"
     },
     "_type": 1,
@@ -303,7 +303,7 @@
       "a": 255
     },
     "_spriteFrame": {
-      "__uuid__": "f87f53f9-2fba-4a5b-968a-79a593311ab2@0ec4f",
+      "__uuid__": "f87f53f9-2fba-4a5b-968a-79a593311ab2@f0088",
       "__expectedType__": "cc.SpriteFrame"
     },
     "_type": 1,
@@ -439,7 +439,7 @@
       "a": 255
     },
     "_spriteFrame": {
-      "__uuid__": "f87f53f9-2fba-4a5b-968a-79a593311ab2@b6f73",
+      "__uuid__": "f87f53f9-2fba-4a5b-968a-79a593311ab2@f0088",
       "__expectedType__": "cc.SpriteFrame"
     },
     "_type": 1,