修正mutation内操作state的行为

yanni4night · yanni4night · commit b5dfbd9b2a01 · 2016-03-21T12:17:58.000+08:00
没记错的话，state应该是整个state
diff --git a/docs/zh-cn/actions.md b/docs/zh-cn/actions.md
@@ -19,7 +19,7 @@ const store = new Vuex.Store({
   },
   mutations: {
     INCREMENT (state, x) {
-      state += x
+      state.count += x
     }
   },
   actions: {
