fix tree anim

components/tree/index.jsx

@@ -27,6 +27,10 @@ const animation = {
     };
   },
 
+  appear(){
+    return this.enter.apply(this, arguments);
+  },
+
   leave(node, done){
     var ok = false;
 

package.json

@@ -58,11 +58,10 @@
     "rc-table": "~3.1.0",
     "rc-tabs": "~5.3.2",
     "rc-tooltip": "~2.6.4",
-    "rc-tree": "~0.15.1",
+    "rc-tree": "~0.15.3",
     "rc-upload": "~1.3.1",
     "rc-util": "~2.0.3",
     "react-slick2": "~0.6.6",
-    "velocity-animate": "~1.2.2",
     "reqwest": "~2.0.2",
     "velocity-animate": "^1.2.2",
     "xhr2": "~0.1.3"